7x^2 - 4x - (5x^2 + 2x)
= 7x^2 - 4x - 5x^2 - 2x
= 2x^2 - 6x
do the 2nd the same way
From 7x2 – 4x subtract 5x2 + 2x.
I do not understand what order to subtract. Do I subtract like a or b?
a) 7x2 – 4x - 5x2 + 2x
b) 5x2 + 2x - 7x2 – 4x
1 answer