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(x+a) is a factor of 2xsq+2ax+5x+10 find a |
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Answer» a=-2 Explanation: X+a=0 x=0-a x=-a p(x)=2x²+2ax+5x+10 p(-a)=(2*-a)²+2*a*-a+5*-a+10 = 2a²-2a²+5a+10 0=-5a+10 5a+10=0 5a=-10 a=-10/5 a=-2 |
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