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fx3 + 8x2 + Kx + 18 is completely divisible by x2 + 6x +9,then find K. |
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Answer» x^2+6x+9=x^2+2x+3x+9= x(x+2)+3( x+3)=( x+2)( x+3); :;; x+2=0; x=-2; x=-3; (-3)^3+8(-3)^2+(-3)k+18=-27+8(9)-3k+18=k=3 |
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