Download App

Factorization — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSFactorization1 Mark
MCQ
Correct the error in $(2x)^2 + 5(2x) + 7 = 2x^2 + 7x + 7$
  • A
    $(2x)^2 + 5(2x) + 7 = 4x + 7x + 7$
  • ✓
    $(2x)^2 + 5(2x) + 7 = 4x^2 + 10x + 7$
  • C
    $(2x)^2 + 5(2x) + 7 = 4x^2 + 7x + 7$
  • D
    $(2x)^2 + 5(2x) + 7 = 4x + 10x + 7$
✓

Answer

Correct option: B.
$(2x)^2 + 5(2x) + 7 = 4x^2 + 10x + 7$
B.  $(2x)^2 + 5(2x) + 7 = 4x^2 + 10x + 7$
Solution:
Consider the Left Hand Side of the given equation,
$(2x)^2 + 5(2x) + 7$
$\Rightarrow (2x \times 2x) + 5 \times (2x) + 7$
$\Rightarrow 4x^2 +10x +7$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 Marks Each]" from Factorization→Factorization — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

$5\%$ of which number is $12?$
→
Tick $(\checkmark)$ the correct answer of the following: Which of the following numbers is not a perfect square$?$
Hint: The number $81000$ ends in an odd number of zeros.
→
Which of the following numbers lies in the middle of $\frac{3}{4}$ and $\frac{7}{4}$:
→
When a die is thrown, total number of possible outcomes is ______.
→
The cube root of $13824$ is __________.
→
The root of the equation $3x + 4 = 13$ is:
→
The factorisation of $ax + bx - ay - by$ is:
→
$\left(3+\frac{5}{-7}\right)=?$
→
A die is thrown. what is the probability of getting an even prime number?
→
$(82)^2-(18)^2=?$
→