Solve the equation X square root 2x 15Solutionx2x15 squari
Solve the equation. X = square root 2x + 15
Solution
x=(2x+15)
squaring on both sides
x2=((2x+15))2
x2=(2x+15)
x2-2x-15 =0
x2-5x+3x-15 =0
x(x-5)+3(x-5) =0
(x+3)(x-5)=0
x+3=0, x-5=0
=>x=-3 , x=5
