Question

right ans mark as brainliest 18

Answer 1

let side of second square=x
then side of first square=2x+3
area of first - area of second=144
${(2x + 3)}^{2} - {x}^{2} = 144 \\ 4 {x}^{2} + 9 + 12x - {x}^{2} = 144 \\ 3 {x}^{2} + 12x + 9 = 144 \\ 3 {x}^{2} + 12x - 135 = 0$
now solving this equation using quadratic formula x=5
I HOPE IT IS CORRECT