Find if (-2x-5) is a factor of the polynomial p(x)=3x^4 + 5x^3 -2x^2 -4
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Step-by-step explanation:
-2x-5=0
-2x=0+5
-2x=5
x=5/-2
3x^4 + 5x³ - 2x² -4
3 (5/-2)^4 + 5 (5/-2)³ - 2 (5/-2)² -4
3 ( 625/16)+5(125/-8) - 2 (25/4)-4
117.1875 + (−78.125) - 12.5 -4
117.1875-78.125-12.5-4
22.5625
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