dani04903 dani04903

04-04-2020
Mathematics

contestada

Solve 2x^2 + 6x = 36 by graphing the related function.

Respuesta :

austyngranberry austyngranberry

04-04-2020

Sorry I can’t help but yea

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Officialalehpeter Officialalehpeter

04-04-2020

Answer: 3 or -6

Step-by-step explanation:

2x2+6x=36

Collect like terms

2x2+6x-36=0

Divide all by 2

X2+3x-18=0

Factorise

Factors of -18 that will give +3 is +6&-3

X2+6x-3x-18=0

X(x+6)-3(x+6)=0

(X-3)(x+6)=0

X-3=0

X=3

X+6=0

X= -6

X= 3 or -6

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