If a=−5, find the value of 2a2−5a−10
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Step-by-step explanation:
a = -5
2a2-5a-10 => if this mean => 2a^2-5a-10
= 2[(-5)^2] - 5(-5) - 10
= 2(25) - (-25) - 10
= 50 + 25 - 10
= 65
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