Question

Find the number that when multiplied by itself, is equal to 12 times 5 plus 4.



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Answer 1

x^2 = 12*5+4 = 64
x = ±8

Answer 2

x = your number

The number that when multiplied by itself, is equal to 12 times 5 plus 4 means:

x • x = 12 • 5 + 4

Since x • x= x^2

x^2 = 60 + 4

x^2 = 64

x = ± √64

x = ± 8

The solutions are:

x = - 8 and x = 8