- 5X + 25Y = 0 25Y = 5X Y = (1/5)X ============
7a+10=2a 7a+10-2a=0 5a+10=0 5a=-10 a=-2
4, -5
A=0 b=0 c=0
r2 + r - 20 = 0(r + 5)(r - 4) = 0r + 5 = 0 or r - 4 = 0r = -5 or r = 4
- 5X + 25Y = 0 25Y = 5X Y = (1/5)X ============
7a+10=2a 7a+10-2a=0 5a+10=0 5a=-10 a=-2
168
20 as 10 x 0 = 0 so is just 10 + 10 = 20
-20
Algebra4y-4 plus y plus 24 equals 6y plus 20-4YCombine like terms5y+20=2y+20Isolate Y3y=0y=0
I come up with 20.
x2 + 9x + 20 = 0 ∴(x + 4)(x + 5) = 0 ∴x ∈ {-5, -4}
x + 20 + 10x = 20 + 9x 11x + 20 = 20 + 9x Subtract 20 from both sides: 11x = 9x Subtract 9x from both sides: 2x = 0 Divide both sides by 2: x = 0
4, -5
(3x-4)(x+5)
If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored