2 years ago

Can you plz help I really don’t get it

Mathematics

1 answer:

nataly862011 [7]2 years ago

7 0

If the number is X then, reading it through . . .

when she multiples it by itself is 'squared', she then adds 10.01 and get 91.01

The equations is: x^2 + 10.01 = 91.01

Solving: x^2 = 91.01 - 10.01

x^2 = 81

x = +9 or -9 as both +9 and -9 squared = 81

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