Question

How do I solve 18x^2+24x+8=0

Answer 1

36x+24x+8=0
60×=-8
×=-8÷60
×=2/15

Answer 2

There are two methods to solve this one is

❤️ FACTIORISATION

❤️QUADRATIC FORMULA

2(9x2)+24x+82(9x2)+24x+8

Factor 22 out of 24x24x.

2(9x2)+2(12x)+82(9x2)+2(12x)+8

Factor 22 out of 88.

2(9x2)+2(12x)+2(4)

 22 out of 2(9x2)+2(12x)2(9x2)+2(12x).

2(9x2+12x)+2(4)2(9x2+12x)+2(4)

Factor 22 out of 2(9x2+12x)+2(4)2(9x2+12x)+2(4).

2(9x2+12x+4)

Rewrite 9x29x2 as (3x)2(3x)2.

2((3x)2+12x+4)2((3x)2+12x+4)

Rewrite 44 as 2222.

2((3x)2+12x+22)2((3x)2+12x+22)

Check the middle term by multiplying 2ab2ab and compare this result with the middle term in the original expression.

2ab=2⋅(3x)⋅2

Simplify.

2ab=12x2ab=12x

Factor using the perfect square trinomial rule a2+2ab+b2=(a+b)2a2+2ab+b2=(a+b)2, where a=3xa=3x and b=2b=2.

2(3x+2)2