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Solve 2x2 plus 4x-9 equals 0?
2*2+4x-9=0 4x=9-4 4x=5 x=5/4
X3-11x2 plus 18x equals 0?
x3 - 11x2 + 18x = 0x (x2 - 11x + 18) = 0 . . . . x = 0 is a root.x (x - 9) ( x - 2) = 0 . . . . x = 9 and x = 2 are roots.X = 0, 2, 9
X2 - 9x - 6 equals 0?
x2 - 9x - 6 = 0 x2 - 9x + (9/2)2 = 6 + (9/2)2 (x - 9/2)2 = 6 + 81/4 x - 9/2 = ± √105 / 2 x = (9 ± √105) / 2
-2x plus 18 equals 0?
x=9 divide each side of -2x + 18 = 0 by -2, then x - 9 = 0 add 9 to each side of the equation, then x = 9
What is Y if Y2 plus 6y-9 equals 0?
Y = 1.125 2Y + 6Y - 9 = 0 2Y + 6Y = 9 Y(2+6) = 9 8Y = 9 Y = 9/8 = 1 1/8 = 1.125 PROOF: 2(1.125) + 6(1.125) - 9 = 0 2.5 + 7.5 - 9 = 0 9 - 9 = 0
What is X2 - 7x - 18 equals 0?
x2-7x-18 (x-9) (x+2) x=9 x=-2 X= either 9 or -2
What is x -9 equals 0?
x=9
What is the sum of the digits on a standard mobile phone (0-9)?
9
Which equation has a solution of x equals 9?
x - 9 = 0 x - 9 = 0 x - 9 = 0 x - 9 = 0
Why is 1 8 greater than 1 10 but less than 1 3?
1-8 equals -7 1-10 equals -9 1-3 equals -2 on number line ____________________________________ -9 -7 -2 -1 0 1 2 3 -9 < -7 < -2
What is the answer of 9 plus 9x0 plus 9 equals?
18. 9 x 0 = 0 S0, 9 + 0 + 9 = 18
Solve x2 - 4x - 9 equals 0 by completing the square?
x2 - 4x - 9 = 0 ∴ x2 - 4x = 9 ∴ x2 - 4x + 4 = 13 ∴ (x - 2)2 = 13 ∴ x - 2 = ±√13 ∴ x = 2 ± √13
