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היכנס

Mathematics for IGCSE & O level - Surds (Section 1 - No. 19)

If x = 2 and y = √3, what is (x+y)(x-y)?
1
4
1+√3
7

הֶסבֵּר

(2+√3)(2-√3) = 4 - 3 = 1

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