Solve the system of equations x (x + 1) (3x + 4Y) = 144 x square + 4x + 4Y = 24

Solve the system of equations x (x + 1) (3x + 4Y) = 144 x square + 4x + 4Y = 24

x(x+1)(3x+4y)=144 ①
x²+4x+4y=24 ②
From ②, 4Y = 24-x & # 178; - 4x is substituted into ①
(x²+x)(3x+24-x²-4x)=144
(x²+x-12)²=0
x²+x-12=0
(x+4)(x-3)=0
The solution is: x = - 4, y = = 6
Or x = 3, y = 3 / 4