Question

solve the equation x(2x+5)=25 by completing square

Answer 1

Step-by-step explanation:

2x ^2 +5x = 25

2x^2+5x- 25=0

2x^2 + 10x -5x -25=0

2x(x+5)-5(x-5)=0

either 2x-5=0 or x-5= 0

x=2.5 or x= 5