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Scorpion4ik [409]
3 years ago
5

Simplify 7x +42/ x2+13x +42

Mathematics
2 answers:
lakkis [162]3 years ago
4 0

Your answer should be 2(10x^3+21x^2+21) over X^2 2(10x^3+21x^2+21)/X^2 unless the / was a fraction symbol and not a division symbol then your answer would be 7 over x+7 7/x+7

Dmitry [639]3 years ago
3 0

\dfrac{7x+42}{x^2+13x+42}=\dfrac{7(x+6)}{x^2+7x+6x+42}=\dfrac{7(x+6)}{x(x+7)+6(x+7)}\\\\=\dfrac{7(x+6)}{(x+7)(x+6)}=\boxed{\dfrac{7}{x+7}}

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