granniejo
05.04.2020 •
Mathematics
Solve the equation by using square roots. 2 x 2 − 9 = 11
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Ответ:
x = ±
Step-by-step explanation:
Given
2x² - 9 = 11 ( add 9 to both sides )
2x² = 20 ( divide both sides by 2 )
x² = 10 ( take the square root of both sides )
x = ±
← exact solutions
Ответ:
there are 50 but what are compatible numbers