ryleylarry12 ryleylarry12

18-12-2020
Mathematics

contestada

Solve using the quadratic formula 2x^2 + 7x - 15 = 0

Respuesta :

jorel1380 jorel1380

18-12-2020

Answer:

1.5 or -5

Step-by-step explanation:

2x²+7x-15=0

Divide by 2:

x²+7x/2-15/2=0

x=-7/2/2 ± √49/4(4)+15/2

=-7/4 ± √49/16+120/16

=-7/4± √169/16=-7/4 ±13/4

=6/4 or -20/4

=1.5 or -5

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