No real roots. Imaginary roots as this function does not intersect the X axis.
y = x2-4x+4 Since the highest degree term is 2, it must have 2 roots
No real roots.
two complex
1
x2 + 4x = 0 ⇒ x(x + 4) = 0 ⇒ x = 0 or x = -4
2
4x-14
many solutions
The answer to the problem of 13 equals -4x plus 9 is x equals -1.
x2-4x+4 = 0 (x-2)(x-2) = 0 x = 2 or x = 2 It has two equal roots.
4x plus 7 plus 3x equals 19 plus xx = 2
Simultaneous Equations. 4x + 5y = 51 4x - 5y = 21 eliminate 'y' by addition. Hence 8x = 72 x = 72/8 x = 9 When x = 9 Substitute into eith equation. 4(9) + 5y = 51 36 + 5y = 51 5y = 51 - 36 5y = 15 y = 3 Hence the answer is ( x,y) = ( 9,3).