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Hello people ~ factorise↷ x^2 + 4x –21​
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12 votes
Hello people ~
factorise↷
x^2 + 4x –21​

User Stan Riley
by
4.1k points

1 Answer

10 votes

Let's see


\\ \rm\rightarrowtail x^2+4x-21


\\ \rm\rightarrowtail x^2+7x-3x-21


\\ \rm\rightarrowtail x(x+7)-3(x+7)


\\ \rm\rightarrowtail (x-3)(x+7)

User Mike Woolf
by
4.2k points
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