(2x^4 - 6x^2+8) + (-x^4+ 2x^2-12)
=2x^4-6x^2-x^4+2x^2-12
=x^4-4x^2-12

Just watch your signs when opening up the brackets and then collect like terms.

3 0

4 years ago

HELPPPPP!!!!A formula for finding the perimeter of a rectangle is P = 2L + 2W. If you know the perim

insens350 [35]

Answer:

W = P/2 - L

Step-by-step explanation:

WE need to make W the subject of

P = 2L + 2W

2W = P - 2L

W = ( P - 2L) / 2

or W = P/2 - L

3 0

3 years ago

Jaidee and Kim are selling fruit for a school fundraiser.

tamaranim1 [39]

What is the rest of the question?

3 0

4 years ago