How do you factor 15x^2-2x-8? | Socratic
2015年10月17日 · Factor y = 15x^2 - 2x - 8 Ans: y = (3x + 2) (5x - 4). I use the new AC Method to factor trinomials (Socratic Search). y = 15x^2 - 2x - 8 = 15 (x + p) (x + q ...
SOLUTION: x^2-15=2x - Algebra Homework Help
x - 15 - 2x = 0 Arrange the left side in descending order of eponents of x: We need to factor the left side: Give the x the coefficient of 1 1 x - 2 x - 15 = 0 Multiply the red 1 by the blue 15, getting 15. Now think of a pair of positive integers whose product is …
Algebra Solver and Math Simplifier that SHOWS WORK
You must use the "*" (star) symbol for all multiplications! x (x+1) is WRONG! It means a function x of x-1. x* (x-1) is right. Use the ^ (caret) for exponentiation. x^2 means x squared. x/2y means Resources: Simplifier Portal, help with entering simplifier formulas (a must read).
How do you solve x^2 + 2x - 15 = 0 ? | Socratic
2018年4月12日 · x=-5" or "x=3 >"the factors of - 15 which sum to + 2 are + 5 and - 3" rArr(x+5)(x-3)=0 "equate each factor to zero and solve for x" x+5=0rArrx=-5 x-3=0rArrx=3
How do you factor the expression x^2 + 2x - 15? | Socratic
2016年3月16日 · (x -3) (x+5) is the factorised form of the expression. x^2 + 2x -15 We can Split the Middle Term of this expression to factorise it.
How do you factor x^2+25x+150? | Socratic
2017年1月3日 · x^2+25x+150= (x+10) (x+15) We want to look for two numbers. These numbers should have a product of color (blue)150 and a sum of color (red)25.
How do you factor 15x^2 - x – 2 by grouping? | Socratic
2016年6月16日 · 15x^2-x-2= (3x+1) (5x-2) To factorize 15x^2-x-2 by grouping, we have to first split coefficient of middle term -1 in two parts so that their product is the product of coefficient of other two i.e. 15xx (-2)=-30. It is apparent that these could be -6 and 5.
SOLUTION: Find b and c so that y=-15x^2+bx+c has vertex (-10,0)?
You can put this solution on YOUR website! The given equation is in the form y = ax^2 + bx + c We see that only a = -15 is known while b and c are currently unknown ...
How do you factor 15x^2 - x-2? | Socratic
2016年6月26日 · 15x^2-x-2= (3x+1) (5x-2) To factorize a quadratic polynomial ax^2+bx+c, if the discriminant b^2-4ac is a square f a rational number, then one can factorize it by splitting b in two parts whose product is ac.
How do you factor x^4 - 13x^2 - 30? | Socratic
2015年6月13日 · x4 −13x2 − 30 is quadratic in x2. To factor it, first find a pair of factors of 30 whose difference is 13. Such a pair is 15 and 2. That gives us: x4 −13x2 − 30 = (x2 − 15)(x2 + 2) The first of these quadratic factors can be considered a difference of squares: x2 −15 = x2 − (√15)2 = (x − √15)(x +√15) using the difference of squares identity: a2 −b2 = (a −b)(a +b) The ...