Quadratic equation

Solve quadratic equation:

2x2+28x-550=0

Correct answer:

x1 =  11
x2 =  -25

Step-by-step explanation:

2x2+28x550=0  2 x2+28 x550=0 2x2+28x550=0  a=2;b=28;c=550 D=b24ac=28242(550)=5184 D>0  x1,2=b±D2a=28±51844 x1,2=28±724 x1,2=7±18 x1=11 x2=25   Factored form of the equation:  2(x11)(x+25)=0

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