18
x=2
X=2
6 x 11 = 66
x= 119
-5x + 6y = 30At the x-intercept, y=0:-5x = 30 ==> x = -6At the y-intercept, x=0:6y = 30 ==> y = 5
2x28 4x14 8x7
If x equals 35, then -x equals -35.
57
40
y = -5
14x2 - 5x + 1 = 2 : 14x2 - 5x - 1 = 0 Solving for the roots of a quadratic equation gives, x = [5 ± √(52 + 4x14)] ÷ 28 = (5 ± 9) ÷ 28 x = 14/28 = 1/2 and x = -4/28 = -1/7.
-49
80
x=2*5 x=10
8
42 72
x = 1.088348752