Question

9. What’s the answer to this question?

Answer 1

The right option is (D) 5

Explanation:

−2x²+wx−4−(x²+5x+6)=−3x²−10

Step 1:

Add 3x^2 to both sides.

wx−3x²−5x−10+3x²=−3x²−10+3x²

wx−5x−10=−10

Step 2:

Add 5x to both sides.

wx−5x−10+5x=−10+5x

wx−10=5x−10

Step 3:

Add 10 to both sides.

wx−10+10=5x−10+10

wx=5x

Step 4:

Divide both sides by x.

wx /x = 5x/x

w=5