Factorise; x 2 + 4root2x + 6????
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x² + 4 √2 x + 6
roots: -2√2 +- √(8-6) = -3 √2 and - √2
(x + √2) (x + 3√2)
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actually you can write : 6 as 3 * √2 *√2
x² + 3√2 x + √2 x + 3√2 √2
= x( x + 3 √2) + √2 (x + 3√2)
= (x + 3√2) (x + √2)
roots: -2√2 +- √(8-6) = -3 √2 and - √2
(x + √2) (x + 3√2)
======================
actually you can write : 6 as 3 * √2 *√2
x² + 3√2 x + √2 x + 3√2 √2
= x( x + 3 √2) + √2 (x + 3√2)
= (x + 3√2) (x + √2)
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