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irinina [24]
3 years ago
10

Factorise 18u²-50y completely.​

Mathematics
1 answer:
Rufina [12.5K]3 years ago
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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