x2 + 49 = 0 ∴ x2 = -49 ∴ x = 7i
The answer is (3.5)2 plus (4)2 equals 410.
(x-9)(X+8)
x2+3=124 x2=121 x= square root(121) x=11
x2 + x2 = 2x2
y = x2 + x = 0 x (X + 1) = 0 x = 0 is one solution x = -1 is the other
The answer is 8.5, which is one solution and real.
There is no integer solution. Quadratic formula gives x = -17.66 or 5.66
x2≤64
x2+24x+144 = 9 x2+24x+144-9 = 0 x2+24x+135 = 0 (x+9)(x+15) = 0 x = -9 or x = -15
x2+10x+1 = -12+2x x2+8x+13 = 0 The solution: x = -4 + the square root of 3 or x = -4 - the square root of 3
x2 + 3x - 10 = (x + 5)(x - 2) ⇒ x = -5 or 2