Question
Dividing 2x2+13x+15 by x+5 and then substituting x=2 in the resulting expression gives
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Answer:
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2x2+13x+15=2x2+10x+3x+15=2x(x+5)+3(x+5)=(2x+3)(x+5)(x+5)=2x+3
Substitutingx=2 in resulting expression gives 2×2+3=7.
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:
2x2+13x+15=2x2+10x+3x+15=2x(x+5)+3(x+5)=(2x+3)(x+5)(x+5)=2x+3
Substitutingx=2 in resulting expression gives 2×2+3=7.
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