3 years ago

Factorise 18u²-50y completely.

1 answer:

6 0

Answer:

$2(3u + 5 \sqrt{y} )(3u - 5 \sqrt{y} )$

Step-by-step explanation:

$18 {u}^{2} - 50y \\ \\ = 2[9 {u}^{2} - 25y] \\ \\ = 2[(3 {u})^{2} - (5 \sqrt{y} )^{2} ] \\ \\ = 2(3u + 5 \sqrt{y} )(3u - 5 \sqrt{y} )$

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Factorise 18u²-50y completely.​