# algebra

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The sum of two numbers is 20. The difference of their squares is 120. What are the numbers?

• algebra -

a + b = 20

a^2-b^2 = 120
(a+b)(a-b) = 120
20(a-b) = 120
a-b = 6
so

a+b = 20
a-b = 6
I bet you can solve that

• algebra -

y=7 and x=9

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