5c² + 28x + 15 (Please show full working)

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Hannish asked Jul 14, 2023

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27 votes

5c² + 28x + 15 (Please show full working)

Mathematics
high-school

Hannish asked Jul 14, 2023

by Hannish

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Answer:

5x² +28x+15

5x² +25x+3x+15

5x(x+5)+3(x+5)

(x+5)(5x+3)

Patrice IMBERT answered Jul 15, 2023

by Patrice IMBERT

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11 votes

Answer:

If you are asking to factorise..

Explanation:

=> 5x² + 28x + 15

=> 5x² + (25+3)x + 15

=> 5x² + 25x + 3x + 15

=> 5x(x + 5) + 3(x + 5)

=> (x + 5)(5x + 3)

JohnN answered Jul 20, 2023

by JohnN

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