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Contact [7]
3 years ago
15

7x(x+4) 7x^2+4 7x^2+28x 8x+4 8x+11

Mathematics
1 answer:
Scilla [17]3 years ago
6 0

Answer:

7x^2+28x

Step-by-step explanation:

7x(x+4)\\\\Multiplication\ is\ distributive\ on\ addition\\\\\Rightarrow 7x(x+4)=7(x\times x+x\times 4)\\\\7x(x+4)=7(x^2+4x)\\\\Multiplication\ is\ distributive\ on\ addition\\\\\Rightarrow 7x(x+4)==7\times x^2+7\times 4x\\\\7x(x+4)=7x^2+28x

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3 0
3 years ago
−1/2(7z+4)+1/5(5z−15)
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3 years ago
Part A: An angle is two collinear rays with a common endpoint. Find an example that contradicts this definition. How would you c
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