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Mathematics
Alannah Hebert
30 July, 15:32
Solve 4r2 - 16 = 84.
{±4}
{±3}
{±6}
{±5}
+1
Answers (
1
)
Kellen Mccall
30 July, 18:35
0
4r² - 16 = 84
4r ² = 84+16
4r² = 100
r²=25
r=√25
r = ±5
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