Question

Which expression is equivalent to (x2 − 3) − (− 3x2 + 5)?

A) 4x2 − 8
B) 4x2 − 2
C) −2x2 − 2
D) −2x2 − 8

Answer 1

4x2-8

Explanation:

This question requires a step by step procedure

Ensure that you don't miss any steps so as to get the right answer

So let's solve the given question

(X2-3)-(-3x2+5)

Let's start by dealing with the bracket first

(X2-3)+3x2-5

X2-3+3x2-5

Collect like terms

X2+3x2-3-5

4x2-8

So the answer is 4x2-8

But in the case where we are asked to solve further we can actually equate the equation to zero

4x2-8=0

4x2=8

Divide both sides by 4

X2=2

Square root both sides

X=√2

But since we are not asked to solve further,our final answer is 4x2-8

I believe this will help you