Can someone solve this ? thank you !

asked Jan 11, 2021 38.5k views

2 votes

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5 votes

Answer:

Explanation:

14)

$(3)/(√(7))=(3*√(7))/(√(7)*√(7))\\\\=(3√(7))/(7)$

15a)

$(5)/(√(2))=(5*√(2))/(√(2)*√(2))\\\\=(5√(2))/(2)\\$

b)(x + y)² - (x - y)² = 4xy

(2 + √3)² - (2 -√3)² = 4* 2 * √3

= 8√3

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