Question

(x+1)(x+2)(x+6)=x3+9x2+4(7x-1)​

Answer 1

Answer:

x = 2

Step-by-step explanation:

(x+1)(x+2)(x+6) = x³ + 9x² + 4(7x - 1)

(x² + 2x + x + 2)(x +6) = x³+9x²+ 28x - 4

(x² + 3x + 2)(x + 6) = x³ + 9x² + 28x - 4

x³ + 6x² + 3x² + 18x + 2x + 12 = x³ + 9x² + 28x - 4

x³ + 9x² + 20x + 12 = x³ + 9x² + 28x - 4

x³ + 9x² + 20x + 12 - x³ - 9x² - 28x + 4 = 0

-8x + 16 = 0

-8x = -16

8x = 16

x = 16/8

x = 2