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Earn +20 ptsQ: X 2-6x plus 8
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Find the solution to the equation 20x2-26x plus 8 equals 0?
(10x - 8)(2x - 1) = 0 x = 4/5 or 1/2. It's easier to check in decimal: 0.8 or 0.5
26x equals 156 how much is x?
26x = 156 Divide both sides of the equation by 26 to find the value of x: x = 6
How do you solve 38 equals 26x - 7x?
38 = 26x - 7x 38 = 19x (38/19) = x 2 = x
What are the solutions to the equation of 8x squared -26x plus 15 equals 0 solved by completing the square?
Equation: 8x^2 -26x +15 =0 I Divide all terms by 8: x^2 -26/8 +15/8 = 0 and complete the square as follows:- (x -13/8)^2 -169/64 +15/8 = 0 => (x-13/8)^2 = 49/64 Square root both sides: x-13/8 = -/+ 7/8 Add 13/8 to both sides: x = 13/8 -/+ 7/8 Therefore solutions are: x = 5/2 or x = 3/4
What number you must add to complete the square xsquared plus 26x equals 68?
x2+26x = 68 Completing the square: (x+13)2-169-68 = 0 (x+13)2-237 = 0 x+13 = -/+ sq rt 237 x = -13-/+ sq rt 237
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