Question

fatore usando SP y²-2y-35=

Answer 1

y²-2y-35=0

Os n° são  -7 e 5

S=-7+5=-2
P=-7(5)=-35

(y-7)(y+5)

Answer 2

$y^{2}-2y-35\\ \\ =y^{2}+5y-7y-5 \cdot 7\\ \\ =y \cdot \left(y+5 \right )-7 \cdot \left(y+5 \right )\\ \\ =\left(y+5 \right ) \cdot \left(y-7 \right )\\ \\ \\ \boxed{y^{2}-2y-35=\left(y+5 \right ) \cdot \left(y-7 \right )}$