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secondary 3 | E Maths
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pcy01
Pcy01

secondary 3 chevron_right E Maths chevron_right Singapore

helppp!thankyou!

Date Posted: 1 month ago
Views: 15
sstrike
Sstrike
1 month ago
(2x)² - (2y)² = 36

4x² - 4y² = 36

x² - y² = 9

(x+y)(x-y) = 9

(x-y) = 9÷(x+y) = 9÷2

(x-y)² = 81÷4 = 20¼ (Ans)

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DAI BIN
Dai Bin's answer
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pcy01
Pcy01
1 month ago
Thankyou!