Wiki User
∙ 2010-12-03 00:18:026x2 + 64x - 12 = 10
∴ 6x2 + 64x - 22 = 0
∴ 3x2 + 32x - 11 = 0
∴ 3x2 + 33x - x - 11 = 0
∴ 3x(x + 11) - 1(x + 11) = 0
∴ (3x - 1)(x + 11) = 0
∴ x ∈ {1/3, -11}
Wiki User
∙ 2010-12-03 00:18:022
All the time
Quadratic formula gives roots as 1.53 and 10.47 (to nearest hundredth.)
15.
It is (A-1)(A+1) when factored
4 squared minus 2 squared equals 12
(a - 2)(a^2 + 6)
3x squared minus 25x minus 28
Without an "equals" word or sign somewhere, there is nothing to solve.You only have an expression, not an equation.
2
There are no rational factors.
Since 3 squared is 9 and 9 - 9 equals 0, that's going to be tough to factor.3x2 - 9 factors to 3(x2 - 3)
It is: 9-4 = 5
15
(a + 3)(a - 3)
All the time
Quadratic formula gives roots as 1.53 and 10.47 (to nearest hundredth.)