one of the roots of the equation 5x²+2x+m=0 is -7/5 then the value of m is
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Answer:
-7
Step-by-step explanation:
p(x) = 5x²+2x+m = 0
p(-7/5) = 5(-7/5)² + 2(-7/5) + m = 0
=> 5(49/25) + (-14/5) + m = 0
=> 49/5 - 14/5 + m = 0
=> 35/5 + m = 0
=> m = -7
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