A square - b square is equal 19 then what is the value of a
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Answer:
±10
Step-by-step explanation:
Assumimg "b" is equal to 9 then
a² - b² = 19
a² - 9² = 19
a² - 81 = 19
a² = 19 + 81
a² = 100
a = √100
a = ±10
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