2x2 - 6x - 25 = 0. Solutions are 5.34 and -2.34
x2 + 6x = 7 ⇒ x2 + 6x + 9 = 7 + 9 ⇒ (x + 3)2 = 16 ⇒ x + 3 = ±4 ⇒ x = -7 or 1
-10 = 6x - 16, or 16 - 10 = 6x, or x = 1.
None but it can be simplified to: 162x-468
-22
x2 + 6x = 16=> x2 + 6x - 16 = 0=> x2 + 8x -2x - 16 = 0=> (x+8)(x-2) = 0=> x = -8 or x = 2So, the solutions of the quadratic equation x2 + 6x = 16 are -8 and 2.
-16 = 6x Swap: 6x = -16 Divide both sides by 6: x = -16/6 = -8/3 or -22/3 or -2.66...
2x2 - 6x - 25 = 0. Solutions are 5.34 and -2.34
The quadratic equation will have two solutions.
x2 + 6x = 7 ⇒ x2 + 6x + 9 = 7 + 9 ⇒ (x + 3)2 = 16 ⇒ x + 3 = ±4 ⇒ x = -7 or 1
-10 = 6x - 16, or 16 - 10 = 6x, or x = 1.
None but it can be simplified to: 162x-468
6x-4 = 18 6x = 18+4 6x = 22 x = 22/6 = 3 and 2/3
-22
x2 - 6x - 16 = (x - 8)(x + 2)
-x2 + 6x + 16 = -(x2 - 6x - 16) = -(x - 8)(x + 2) = -(8 - x)(x + 2)
x^2+6x-16 (x+2)+(6x-16) x+8+x-16 (x+8)(x-2) here you go :)