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aev [14]
3 years ago
11

Help! How do I factor this?

Mathematics
2 answers:
Artyom0805 [142]3 years ago
8 0
Given: 5x^3-15x^2-140x

Factor out a 5x: 5x(x^2-3x-28)

Find two numbers that multiply to -28 and add up to -3. In this case, -7 and 4: 5x(x-7)(x+4)
viva [34]3 years ago
4 0
Given <<5x^3-15x^2-140x>>
factor out everything in common
5x(x^2-3x-28)
factor polynomial within the parentheses
5x(x+4)(x-7)
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