Tuesday, 8 September 2015

#Homework help Quadratic equation

For #Homework help contact me.
1.            Find the value of x which satisfy the equation
x²= 3x+28
x²-3x-28=0
x²-7x+4x-28=0
x(x-7)+4(x-7)=0
(x+4)(x-7)=0

X=-4,7