Question

how to find X using factorisation if the question is 18 + 2 X square + 12 x is equal to zero

Answer 1

18+2x²+12x=0,


2(9+x²+6x)=0,

then

x²+6x+9=0,

x²+(3+3)x+9=0,

(x+3)(x+3)=0,

(x+3)²=0,

then

x+3=0,

x=-3

Answer 2

$\bold {\huge{Ello!!}}$

$<b >Here's your answer$

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Given equation :- 2x² + 12x + 18 = 0

To find the value of x

Now ,

2x² + 12x + 18 = 0

=> 2 ( x² + 6x + 9 ) = 0

=> x² + ( 3 + 3 )x + 9 = 0 [ • 9 = 3 × 3 ]

=> x² + 3x + 3x + 9 = 0

=> x ( x + 3 ) + 3 ( x + 3 ) = 0

=> ( x + 3 ) ( x + 3 ) = 0

=> ( x + 3 )² = 0

=> x + 3 = 0

=> x = - 3 [ ★ Required answer ]


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$<b><u><marquee direction> Hope it helps !!$