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Mathematics
Aleena Dudley
26 March, 22:00
Whats the answer to 8p squared minus 16 p=10
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Kallie Estrada
26 March, 22:52
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8p² - 16p = 10
8p² - 16p - 10 = 0 Divide through by 2
4p² - 8p - 5 = 0
Multiply first and last coefficients: 4*-5 = - 20
We look for two numbers that multiply to give - 20, and add to give - 8
Those two numbers are 2 and - 10.
Check: 2*-10 = - 20 2 + - 10 = - 8
We replace the middle term of - 8p in the quadratic expression with 2p - 10p
4p² - 8p - 5 = 0
4p² + 2p - 10p - 5 = 0
2p (2p + 1) - 5 (2p + 1) = 0
(2p + 1) (2p - 5) = 0
2p + 1 = 0 or 2p + 5 = 0
2p = 0 - 1 2p = 0 - 5
2p = - 1 2p = - 5
p = - 1/2 p = - 5/2
The solutions are p = - 1/2 or - 5/2
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Soren Huerta
27 March, 00:25
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784 is the answer because 10 squared is 100 multiply that by 8 you have 800 then subtract 16 and you get 784
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