3
x2 + 10x = 0 x2 + 10x + 25 = 25 (x + 5)2 = 25 x + 5 = +-5 x1 = 0 x2 =10
X2 + y2 = 100 = r2 r = 10
x2 + 7x + 9 = 3 ∴ x2 + 7x + 6 = 0 ∴ (x + 6)(x + 1) = 0 ∴ x ∈ {-6, -1}
x2+7x+12=0 x2+7x=-12 x+Sqaure Root of 7x= 2(SQ Root Symbol)3
It equals x2 - 34
The quadratic expression x2+6x+8 when factorised equals (x+2)(x+4)
if x2 + 7 = 37, then x2 = 29 and x = ±√29
x2 + 10x + 21 = (x + 3)(x + 7)
-2
-7.5?
x2 plus 3x plus 3 is equals to 0 can be solved by getting the roots.
X2 or 2 times x?
(2-r)e-rr
no
x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
-x2+14x=49