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sladkih [1.3K]
3 years ago
11

PLZ HELP IM BEING TIMED GIVING BRAINLIEST Using the square root property solve (a - 10)² = 121

Mathematics
2 answers:
olchik [2.2K]3 years ago
8 0

Answer:

21

Step-by-step explanation:

We know that the sqaure root of 121 = 11.

So, A - 10 = 11

=> A = 21

Alex3 years ago
3 0

Answer:

a = -1 or a = 21

Step-by-step explanation:

take square root of each side to get:

a - 10 = \sqrt{121}

a - 10 = 11;  a = 21

a - 10 = -11;  a = -1

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