51 i think i just did this question on my test
Answer:
1400 cm squared
Step-by-step explanation:
40*35=1400cm squared
1: x = -1
2: x = 3
3: x = -3
f(x)=<u>x^3+x^2</u>−9x−9
f(x)=x^2<u>(</u>x+1) <u>−9x−9</u>
f(x) = x^2<u>(x+1)</u> - 9<u>(x+1)</u>
f(x)= (x+1)<u>(x^2-9)</u>
f(x) =(x+1)(x-3)(x+3)
