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: $3 a^2 b$ from $-5 a^2 b$Answer$-5 a^2 b-3 a^2 b=-8 a^2 b$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)$$(x+4)(x+4)$ $=x^2+(4+4) x+4 \times 4$ $=x^2+8 x+16$View full question & answer→
Question 51 MarkSubtract: -16p from -11pAnswer-11p - (-16p) = -11p + 16p = 5pView full question & answer→
Question 61 MarkAdd: 8ab, -5ab, 3ab, -abAnswer8ab + (-5ab) + (3ab) + (-ab) = 8ab - 5ab + 3ab - ab = 11ab - 6ab = 5abView full question & answer→
Question 71 MarkFind following products: $(2 x+5)(2 x-5)$Answer$(2 x+5)(2 x-5)$ $=(2 x)^2-(5)^2$ $=4 x^2-25$View full question & answer→
Question 81 MarkDivide: $24 x ^2 y ^3$Answer$24\text{x}^2\text{y}^2\div3\text{xy}$ $\Rightarrow\Big(\frac{24}{3}\Big)\Big(\text{x}^{2-1}\Big)\Big(\text{y}^{3-1}\Big)$ $\Rightarrow8\text{xy}^2$View full question & answer→
MCQ 91 MarkTick $(\checkmark)$ the correct answer: $(x-6)(x-6)=$ ?A$\left(x^2-36\right)$B$\left(x^2+36\right)$C$\left(x^2-6 x+36\right)$✓$\left(x^2-12 x+36\right)$AnswerCorrect option: D. $\left(x^2-12 x+36\right)$$(x-6)(x-6)$ $=x^2+(-6-6) x+(-6)(-6)$ $=x^2-12 x+36$View full question & answer→
Question 101 MarkDivide: $36 x y z^2$ by $-9 x z$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 121 MarkFind the following products: $(5 x+7) \times(3 x+4)$Answer$(5 x+7) \times(3 x+4)$ $=5 x(3 x+4)+7(3 x+4)$ $=15 x^2+20 x+21 x+28$ $=15 x^2+41 x+28$View full question & answer→
MCQ 131 MarkTick $(\checkmark)$ the correct answer: If $(a+b)=12$ and $a b=14$, then $\left(a^2+b^2\right)=$ ?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: $(7 x+11 y)(7 x-11 y)$Answer$(7 x+11 y)(7 x-11 y)=(7 x)^2-(11 y)^2 \\ =49 x^2-121 y^2$View full question & answer→
Question 151 MarkDivide: $-56 mnp ^2$ by 7 mnpAnswer$-56\text{mnp}^2 \div 7\text{mnp}$ $\frac{-56\text{mnp}^2}{7\text{mnp}}\div-8\text{p}^{2-1}=-8\text{p}$View full question & answer→
Question 161 MarkSubtract: -2abc from -8abcAnswer-8abc -(-2abc) = -8abc + 2abc = -6abcView full question & answer→
Question 171 MarkDivide: $-72 x^2 y^2 z \text { by }-12 x y z$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→