Question 11 MarkFind following products: $(8 + x)(8 - x)$Answer$(8 + x)(8 - x)$ $= (8)^2- (x)^2$ $= 64 - x^2$View full question & answer→
Question 21 MarkFind following products: $(x + 3)(x - 3)$Answer$(x + 3)(x - 3)$ $= (x)^2 - (3)^2$ $= x^2- 9$View full question & answer→
Question 31 MarkSubtract: $3a^2b from -5a^2b$Answer$-5a^2b - 3a^2b = -8a^2b$View full question & answer→
MCQ 41 MarkTick $(\checkmark)$ the correct answer : $(x + 4)(x + 4) = ?$A$\left(x^2+16\right)$B$\left(x^2+4 x+16\right)$✓$\left(x^2+8 x+16\right)$D$\left(x^2+16 x\right)$AnswerCorrect option: C. $\left(x^2+8 x+16\right)$$(x + 4)(x + 4)$ $= x^2 + (4 + 4)x + 4 \times 4$ $= x^2 + 8x + 16$View full question & answer→
Question 51 MarkSubtract: $-16p$ from $-11p$Answer$-11p - (-16p) = -11p + 16p = 5p$View full question & answer→
Question 61 MarkAdd: $8ab, -5ab, 3ab, -ab$Answer$8ab + (-5ab) + (3ab) + (-ab)$ $= 8ab - 5ab + 3ab - ab$ $= 11ab - 6ab$ $= 5ab$View full question & answer→
Question 71 MarkFind following products: $(2x + 5)(2x - 5)$Answer$(2x + 5)(2x - 5)$ $= (2x)^2 - (5)^2 $ $= 4x^2 - 25$View full question & answer→
Question 81 MarkDivide: $24x^2y^3$ by $3xy$Answer$24\text{x}^2\text{y}^2\div3\text{xy}$ $\Rightarrow\Big(\frac{24}{3}\Big)\Big(\text{x}^{2-1}\Big)\Big(\text{y}^{3-1}\Big)$ $\Rightarrow8\text{xy}^2$View full question & answer→
MCQ 91 MarkTick $(\checkmark)$ the correct answer : $(x - 6)(x - 6) = ?$A$\left(x^2-36\right)$B$\left(x^2+36\right)$C$\left(x^2-6 x+36\right)$✓$\left(x^2-12 x+36\right)$AnswerCorrect option: D. $\left(x^2-12 x+36\right)$$(x - 6)(x - 6)$ $= x2 + (-6 - 6)x + (-6)(-6)$ $= x^2 - 12x + 36$View full question & answer→
Question 101 MarkDivide: $36xyz^2$ by $-9xz$Answer$36\text{xyz}^2\div-\text{9xz}$ $-\frac{36\text{xyz}^2}{-9\text{xz}}=-4\text{yz}^{2-1}=-4\text{yz}$View full question & answer→
Question 111 MarkSubtract: $-8pq$ from $6pq$Answer$6pq -(-8pq) = 6pq + 8pq$View full question & answer→
Question 121 MarkFind the following products: $ (5x + 7) × (3x + 4)$Answer$(5x + 7) × (3x + 4) $ $= 5x(3x + 4) + 7(3x + 4)$ $= 15x^2 + 20x + 21x + 28$ $= 15x^2 + 41x + 28$View full question & answer→
MCQ 131 MarkTick $(\checkmark)$ the correct answer : If $(a + b) = 12$ and $ab = 14$, then $(a^2 + b^2) = ?$A$172$✓$116$C$165$D$126$AnswerCorrect option: B. $116$$ a+b=12 $ $ a b=14 $ $ a^2+b^2=(a+b)^2-2 a b $ $ =(12)^2-2 \times 14 $ $ =144-28 $ $ =116$View full question & answer→
Question 141 MarkFind following products: $(7x + 11y)(7x - 11y)$Answer$(7x + 11y)(7x - 11y) = (7x)^2 - (11y)^2$ $= 49x^2 - 121y^2$View full question & answer→
Question 151 MarkDivide: $-56 m n p^2$ by $7 m n p$Answer$-56\text{mnp}^2 \div 7\text{mnp}$ $\frac{-56\text{mnp}^2}{7\text{mnp}}\div-8\text{p}^{2-1}=-8\text{p}$View full question & answer→
Question 161 MarkSubtract: $-2abc$ from $-8abc$Answer$-8abc -(-2abc)$ $= -8abc + 2abc$ $= -6abc$View full question & answer→
Question 171 MarkDivide: $ -72x^2y^2z$ by $ -12xyz$Answer$-72\text{x}^2\text{y}^2\text{z} \div -12\text{xyz}$ $\frac{-72\text{x}^2\text{y}^2\text{z}}{-12\text{xyz}}=6\text{x}^{2-1}\text{y}^{2-1}=6\text{xy}$View full question & answer→