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28-05-2019
Mathematics

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One number is 4 more than another. The difference between their squares is 128. What are the numbers?
Smaller number=_
Larger number=_

Respuesta :

28-05-2019

Answer:

14 and 18

Step-by-step explanation:

Small number : a

Larger number : a + 4

( a + 4 )^2 - a^2 = 128

a^2 + 8 a + 16 = 128

8 a = 128 - 16

a = 112 / 8

a = 14

And a + 4 = 18

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