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Assuming that the equation is:
-5x (9-4x) = 12
then:
20x2 - 45x -12 = 0
a x2 + bx + c = 0
Accordingly, a = 20, b = -45, c = -12
x = [ 45 +- (-45 x-45 - 4 x 20 x -12)1/2]/2 x 20 = [45 +- (54.635)]/40
x = [45 +54.635] / 40 or [45-54.635]/40
x = 2.491 0r x = - 0.241
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4x plus x-3-9 plus 4x6?
* is the same as x for multiplication. But because x is a variable it would be confusing to have both.4x+x-3-9+4*6 =4x+x-3-9+24 =5x-3-9+24 =5x+12 5x and 12 cannot be added because they are not like terms.
What are solutions to the equation x2 plus 4x-9 equals 5x plus 3?
x2+4x-9 = 5x+3 x2+4x-5x-9-3 = 0 x2-x-12 = 0 (x+3)(x-4) = 0 x = -3 or x = 4
What is x when 5x plus 12 equals 4x-88?
5x+12 = 4x-88 x = -100
How do you solve -4x - 5x 9?
Assuming that's -4x - 5x + 9, the answer would be x =1As -4x - 5x + 9 = 0Making it 9 = 5x + 4x, or 9 = 9x, cancel out the 9's, making x = 1.If it's -4x - 5 x 9, the answer would x = 11.25As -4x - 5 x 9 = 0Making it 45 = 4x, divide the 45/4, which would give you 11.25.
X2 plus 4x - 9 equals 5x plus 3?
x2 + 4x - 9 = 5x + 3 ∴ x2 - x - 12 = 0 ∴ (x + 3)(x - 4) = 0 ∴ x ∈ {-3, 4}
