Question

Select the correct difference.

Answer 1

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

$5d^2+4d-3-(2d^2-3d+4)$

We need to find the correct difference.

Collect the like terms together.

$5d^2+4d-3-(2d^2-3d+4)\\\\=5d^2+4d-3-2d^2+3d-4\\\\=5d^2-2d^2+4d+3d-3-4\\\\=3d^2+7d-7$

Hence, First option is correct.

Answer 2

Answer:

Option (a) is correct.

$5d^2+4d-3-(2d^2-3d+4)=3d^2+7d-7$

Step-by-step explanation:

Given: $5d^2+4d-3-(2d^2-3d+4)$

We have to solve the given expression and choose the correct difference from the given options.

Consider the given expression $5d^2+4d-3-(2d^2-3d+4)$

Apply plus- minus rule, $-(-a)=a$

We have,

$=5d^2+4d-3-2d^2+3d-4$

Adding like terms, we have,

LIKE TERMS are terms having same variable with same degree.

$=(5-2)d^2+(4+3)d-(3+4)$

Simplify, we have,

$=3d^2+7d-7$

Thus, Option (a) is correct.