Question

$y ^{2} + 12y - 45$
what is the answer of this​

Answer 1

y^2+15y-3y-45=0

y(y+15)-3(y+15)=0

(y+15)(y-3)=0

y=-15,3

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Answer 2

$\bf\large{\underline{\pink{Solution}}}$

$\sf{\implies y^{2}+12y-45}$

$\sf{\implies y^{2}+(15-3)y-45}$

$\sf{\implies y^{2}+15y-3y-45}$

$\sf{\implies y(y+15)-3(y+15)}$

$\sf{\implies (y+15)(y-3)}$