Question

Solve for x by factorisation 8x²-32=0

Answer 1

Answer:

8x²-32=0

8x²=32

x²=32/8

x²=4

x=√4

x=2 is the answers.

Step-by-step explanation:

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Answer 2

Answer:

$4(x {}^{2} - 8) = 0$

$4((x) {}^{2} - (2 \sqrt{2} ) {}^{2} ) = 0$

$4(x + 2 \sqrt{2} )(x - 2 \sqrt{2} ) = 0$

$(x + 2 \sqrt{2} )(x - 2 \sqrt{2} ) = 0$

$either$

$x = - 2 \sqrt{2}$

$or$

$x = 2 \sqrt{2}$