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Some plusses or minusses would help, but here goes anyway:
2y2 - 6y - 8 = (2y + 2)(y - 4); y = -1 or 4
2y2 + 6y - 8 = (2y - 2)(y + 4); y = 1 or -4
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∙ 14y ago
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How do you factorise the quadratic equation 2y squared - 2y -24?
2y2 - 2y - 24 has the factors (2y + 6) and (y - 4) There is a formula, but I always use trial and error. The factors of the non-x element need to be such that they can be added to give the middle element. So when you get 24, then you need to be looking at 2,12 - 3,8 - 4,6 When both the second and third element are minus values then there is a plus and a minus in the factors.
Combine like terms?
mathematics: to combine terms that are alike
Factor 5x3 plus 40y6?
5(x + 2y2)(x2 - 2xy2 + 4y4)
How do you factor 12y to the third power minus 30y squared plus 12y?
12y3 - 30y2 + 12yFactor out a y:y(12y2 - 30y + 12)Factor out a 6:6y(2y2 -5y + 2)Factor 2y2 - 5y + 26y(2y - 1)(y - 2)
What is 2 times y times y divided by 4?
8
How do you factor 2Y2 plus 6Y-4?
It is not factorable because if you do the quadratic formula you get -6+/- √ 68 __________ 4 √ is a square root sign...sorry it doesnt really look like one quadratic formula x=-b+/- √ b2-4ac ____________ 2a a=2 b=6 c=-4
How do you use quadratic formula to solve one-third minus 2 divided by 2y plus one equals 3 divided by y?
1/3 - 2/(2y + 1) = 3/y Provided that y ≠-1/2 and y ≠0, multiply through by 3y(2y+1) to give y(2y + 1) - 6y = 9(2y+1) that is, 2y2 + y - 6y = 18y + 9 or 2y2 - 23y - 9 = 0 The quadratic formula then gives y = [23 ± sqrt{232 - 4*2*(-9)}]/(2*2) = [23 ± sqrt(601)]/4 so that y = -0.3788 or y = 11.8788
What does 2y2 plus 4 equal to?
this equals to 12
How will you find the solution of this quadratic equation by factoring 2y squared plus y equals negative 11y?
2y2 + y = -11yAdd 11y to each side of the equation:2y2 + 12y = 0Divide each side by 2:y2 + 6y = 0Factor the left side:y (y + 6) = 0The equation is true if either factor is zero:y = 0or (y + 6) = 0y = -6
How do you find the y intercept for x equals 2y2 plus 3y plus 1?
The y-intercept is the place (or places) where x=0 . So if 'x' is 2y2+3y+1 , then all you have to do is find places where 2y2+3y+1 is zero, and those are your y-intercepts.
How do you solve 2 cos squared x plus sin x-1?
1
The variables x and y are related by the following equation x equals 2y2 plus 3?
-5
How do you factor 2y2 plus 6y-4 equals 0?
2(y^2 + 3y - 2)
The variables x and y are related by the following equation x equals 2y2 plus 3 If x equals 53 what negative value of y makes this an equality?
Question: x = 2y2 +3 if x = 53 what NEGATIVE value of y makes this an equality Answer: x= 2y2 + 3 53 = 2y2 + 3 53 - 3 = 2y2 50/2 = y2 25 = y2 Take the Square Root of Both sides so we can get: y = Square root of 25 so: y = EITHER 5 or -5 Then the ANSWER is -5 (since we need the NEGATIVE Value of Y)
Solution to the following system of equations 5x2 - 2y2 equals -20 7x2 - y2 equals 152?
5x2 - 2y2 = -20 7x2 - y2 = 152 Eq1 - 2*Eq2: -9x2 = -324 so that x2 = 36 Substituting the value of x2 in Eq1: 2y2 = 200 so that y2 = 100 The four solutions are (-6, -10), (-6, 10), (6, -10) and (6,10)
How do you factor 2y2-26y plus 60?
2(y - 3)(y - 10)
What is the factorization of this trinomial 10x2y2 plus 8xy2-210y2?
10x2y2 + 8xy2 - 210y2 = 2y2(5x2 + 4x - 105) = 2y2(5x2 + 25x - 21x - 105) = 2y2(x + 5)(5x - 21).
