Question

What are the solutions to the equation?

3x^2+6x=45

Enter your answers in the boxes.

Answer 1

Explanation:

3x² +6x = 45

divid by : 3 :

x² +2x = 15

(x² +2x +1 )-16 = 0

( x + 1 )² - 4² = 0

note : a² - b² = (a - b ) ( a + b) ...idetity

( x +1 -4)( x + 1 +4) = 0

(x -3 ) ( x+5) =0

x-3 = 0 or x +5 = 0

x = 3 or x = - 5

my answer in the boxes : x = 3 and x = -5

Answer 2

x= 3,-5

hope this helps