Question

Andy and Sylvie each incorrectly simpilfied the expression: -3-4(2x-3).

Andy : -14x + 12
Sylvie: -8x - 6
Explain the errors and give the correct answer.

Answer 1

-9 - 8x

Explanation:

Andy multiplied incorrectly it should have been -4*2x, -4*-3

Sylvie forgot to multiply both sides she did -4*2x but forgot to do -4*-3

The correct answer should be...

-3-4(2x-3)

-3 - 8x + 12

-9 - 8x

Answer 2

1. Observe problem

2. Simplify

-3-4(2x-3)

expand by distributive property

-3-8x+12

addition and subtraction

-8x+9

I have no idea what Andy And Sylvie were doing, so therefore...

I don't know which brain cell in there head is dysfunctional.