Question

Solve by using the best method...

(x+2)(x+6)=x

Answer 1

@tgawade

Answer 2

@SolomonZelman

Answer 3

@Hero

Answer 4

first use FOIL method on left side , do you know FOIL method ?

Answer 5

No...

Answer 6

If (a + b)*(c+d) = a*c +a*d + b*c + b * d

Answer 7

Should I subtract x?

Answer 8

first so we will get (x+2) * (x +6) = x*x + x*6 + 2 *x+2*6

= x^2 + 6x + 2x + 12

= x2 + 8x + 12 right ?

Answer 9

Okay...then what?

Answer 10

So we have x^2 +8x + 12 = x

Now to get rid of x from right hand side what we need to do ?

Answer 11

Just subtract x from both sides & solve quadratic equation for x..

Answer 12

So after subtracting x from both sides what do you get ?

Answer 13

x^2+7x+12=0

Answer 14

Correct !! , now do you know quadratic formula ?

Answer 15

so what would be x = ?

Answer 16

I hate the quadratic formula :(

Answer 17

Give me a second...

Answer 18

(-3,0) and (-4,0)