marichuysandoval marichuysandoval

02-11-2020
Mathematics

contestada

Solve this quadratic: 2x^2 – 5x – 7 = 0

Respuesta :

Vitapinkk Vitapinkk

02-11-2020

Answer:

Step-by-step explanation:

2x^2-5x-7=0

2x^2+2x-7x-7=0

2x(x+1)-7(x+1)=0

(x+1)(2x-7)=0

X+1=0⇒x=-1
2x-7=0⇒x=7/2

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