shelbycg02
30.04.2021 •
Mathematics
4.
What equation has the missing number?
50/5=
?
a. 50 x 5 =
b. 50-5=
c. 5+) = 50
d. 5x = 50
Solved
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Ответ:
Step-by-step explanation:
Simplify the left side.
Multiply both numerator and denominator by the conjugate of the denominator:
(√3 - 1)/(√3 + 1) = (√3 - 1)(√3 - 1)/(√3 - 1)(√3 + 1) =(√3² - 2√3 + 1)/(3 - 1) =(10 - 2√3)/2 = 5 - √3Compare this to the right side to get:
5 - √3 = a + b√3a = 5, b = -1