Question
Write -2x^2(-5x2+4x^3) in standard form.
A) -8x^5-20x^4
B) -8x^5+10x^4
C) -7x+2x^4
D) -7x^5-10x^4
A) -8x^5-20x^4
B) -8x^5+10x^4
C) -7x+2x^4
D) -7x^5-10x^4
Answers
oobleck
well, (-2x^2)(-5x^2) = 10x^4
Only one choice has that, so ...
Note that standard form list the powers in decreasing order.
Only one choice has that, so ...
Note that standard form list the powers in decreasing order.