2 years ago

PLS HELP!! I WILL GIVE THE FIRST GOOD ANSWER BRAINLIEST!!!

Mathematics

2 answers:

goldenfox [79]2 years ago

5 0

Answer:

in my opinion I think the answer is a because I don't know why

Step-by-step explanation:

QveST [7]2 years ago

5 0

I think the answer is c hopefully this helped

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2 years ago

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nikklg [1K]

Given

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$S_1=\Sigma_{n=1}^{1}15(-4)^n=15(-4)=\bold{-60} \\ \\ S_2=\Sigma_{n=1}^{2}15(-4)^n=\Sigma_{n=1}^{1}15(-4)^n+15(-4)^2 \\ =-60+15(16)=-60+240=\bold{180} \\ \\ S_3=\Sigma_{n=1}^{3}15(-4)^n=\Sigma_{n=1}^{2}15(-4)^n+15(-4)^3 \\ =180+15(-64)=180-960=\bold{-780} \\ \\ S_4=\Sigma_{n=1}^{4}15(-4)^n=\Sigma_{n=1}^{3}15(-4)^n+15(-4)^4 \\ =-780+15(256)=-780+3,840=\bold{3,060} \\ \\ S_5=\Sigma_{n=1}^{5}15(-4)^n=\Sigma_{n=1}^{4}15(-4)^n+15(-4)^5 \\ =3,060+15(-1,024)=3,060-15,360=\bold{-12,300}$

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mihalych1998 [28]

The factored expression would look like this : 3(x+8)(x-8)

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2 years ago

Read 2 more answers