Question

(3x^7+6x^4-5x+7)-(6x^4-5x^3+7) find the difference someone please help lol

Answer 1

(3x^7+6x^4-5x+7)-(6x^4-5x^3+7)

3x^7+6x^4-5x+7-6x^4+5x^3-7 ... distribute

now combine like terms

Answer 2

wait what

Answer 3

for example, 6x^4 and -6x^4 are like terms because they have the same exponent over the x

Answer 4

so whats the answer

Answer 5

so combining them gives you

6x^4 + (-6x^4) = 6x^4 - 6x^4 = 0x^4 = 0

that's just one pair of like terms

Answer 6

see how I'm getting that?