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34kurt
4 years ago
12

(12f^2-9f+15)-(-4f^2-3f+6) subtract.

Mathematics
1 answer:
german4 years ago
8 0
So what you do is distribute the invisible -1 in front of the second parenthasees set and add like terms
remember
x^2+3x^2=4x^2
-(3+4x-x^2)=-1(3x+4x-x^2)=-3-4x+x^2

so first distribute the negative 1
-1(-4f^2-3f+6)=4f^2+3f-6
add
12f^2-9f+15+4f+3f-6
group like terms
12f^2+4f^2-9f+3f+15-6
add
16f^2-6f+9

aswer is 16f^2-6f+9

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Answer:

B. s=\dfrac{1}{4}\times420

Step-by-step explanation:

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\text{Number of students who prefer rap}=s=\dfrac{1}{4}\times420\\\Rightarrow s=105

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Step-by-step explanation:

Here, given The perimeter of the square  = (36 x+44)

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Simplifying the perimeter expression.

Take 4 common out of the expression (36 x+44), we get:

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