X2 + 13X - 40 = 0
I can't factor this, so the quadratic equation will be used.
X = - b (+/-) sqrt(b2 - 4ac)/2a
a = 1
b = 13
c = - 40
X = - 13 (+/-) sqrt[(132 - 4(1)(- 40)]/2(1)
X = - 13 (+/-) sqrt(169 + 160)/2
X = [- 13 (+/-) sqrt(329)]/2
=========================ugly exact answer
Inexact answers.
X = ~ 2.569
X = ~ - 15.569
x2 + x2 + x2 = (1 + 1 + 1)x2 = 3x2
x2 + x2 = 2x2
3x4 plus 5x3 plus x2 - 5 divided by x 2 =[(3x4) + (5x3) + (x2 - 5)]/x2 =(12 + 15 + x2 -5)/x2 =(27 - 5 + x2)/x2 =(22 + x2)/x2
x2 + 48x + 320
x2 + x2 = 2x2
x4 +x2 =x2 (x2+1)
4x2 + x2 = 8 + x2
x3 + x2 + 4x + 4 = (x2 + 4)(x + 1)
x2+7x+12
(x2 + 26x +) : syntax error.x2 + 26x
X2+Y3+15 All you can do is simplify it.
x2 + 63