What is (sqrt(7)-sqrt(y))(sqrt(7)-sqrt(y)) ?

The solution to (sqrt(7)-sqrt(y))(sqrt(7)-sqrt(y)) is 7-2sqrt(7)sqrt(y)+y

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simplify (sqrt(7)-sqrt(y))(sqrt(7)-sqrt(y))

simplify

(7 - y) (7 - y)

7 - 27 y + y

Solution steps

(7 - y) (7 - y)

Apply exponent rule:

aa = a^{2}

(7 - y) (7 - y) = (7 - y)^{2}

= (7 - y)^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(7 - y)^{2} = (7)^{2} - 27 y + (y)^{2}

= (7)^{2} - 27 y + (y)^{2}

(7)^{2} = 7

(y)^{2} = y

= 7 - 27 y + y

e^{- 10 l n (x)}

3.2 \cdot 1 0^{- 2}

e^{- 1} e^{- 1}

e^{2 t} e^{- s t}

What is (sqrt(7)-sqrt(y))(sqrt(7)-sqrt(y)) ?
The solution to (sqrt(7)-sqrt(y))(sqrt(7)-sqrt(y)) is 7-2sqrt(7)sqrt(y)+y