0
x2 - 4x - 9 = 0
∴ x2 - 4x = 9
∴ x2 - 4x + 4 = 13
∴ (x - 2)2 = 13
∴ x - 2 = ±√13
∴ x = 2 ± √13
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How do you solve 6 - 4x equals 54?
-12 (?)
Solve for y 4x-y equals 7?
-3
How do you solve -4x-4 equals -16?
-4x-4 equals -16. Add 4 to both sides; -4x equals -12. Divide both sides by -4; x equals 3.
How do you solve y equals 4x-8 and y equals 2x plus 10?
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
Can you solve x squared minus 4x minus 2 equals 0?
Yes and x = 2+square root of 6 or x = 2-square root of 6
Solve 3x2-12x equals 15 using the method of completing the square?
Divide all terms by 3 so:- x2-4x = 5 Completing the square:- (x-2)2 = 9 x-2 = -/+3 x = -1 or x = 5
Solve 4x equals 72?
4x = 72.divide both sides by 4x = 18
How do you solve 6 - 4x equals 54?
-12 (?)
Solve for y 4x-y equals 7?
-3
How do you solve the square root of 4x to the sixth power?
4x to the sixth can be expanded to (4x * 4x * 4x)(4x * 4x * 4x) or (4x to the third)(4x to the third) the square root of the above would be 4x to the third
How do you solve 2y equals 4x plus 4?
2y = 4x + 4y = 2x + 2
4x equals 24 solve for x?
X is 6
Solve for x 4x equals 20?
x = 5
How do you solve -4x-4 equals -16?
-4x-4 equals -16. Add 4 to both sides; -4x equals -12. Divide both sides by -4; x equals 3.
Solve 4x equals 16?
4x = 16Divide each side of the equation by 4:x = 4
How do you solve y equals 4x-8 and y equals 2x plus 10?
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
Can you solve x squared minus 4x minus 2 equals 0?
Yes and x = 2+square root of 6 or x = 2-square root of 6
