3x squared - x squared = 2x squared
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
9x2 + 18x - 16 = 0 ⇒ (3x - 2)(3x + 8) = 0 ⇒ 3x - 2 = 0 → x = 2/3 or 3x + 8 = 0 → x = -22/3
They are like terms and can be added together as 11x squared
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
(3x-2)(x-2)
3x squared - (3x) squared = 0
8
3x squared - x squared = 2x squared
3x2-9x = 0 x(3x-9) = 0 x = 0 or x = 3
This is impossible as the variables are different
x = 25 / 3squared + 5
X squared - 3x - 10 = 0 (x-5) (x+2) = 0 x - 5 = 0 x + 2 = 0 X= 5 x = -2
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
5x2 + 3x + 8x2 = 13x2 + 3x = x(13x + 3)
That factors to 3x(3x - 1)
9x2 + 18x - 16 = 0 ⇒ (3x - 2)(3x + 8) = 0 ⇒ 3x - 2 = 0 → x = 2/3 or 3x + 8 = 0 → x = -22/3