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18-10-2020
Mathematics

contestada

If ab = 5 and a² + b² = 25, then (a + b)² =

Respuesta :

allenfoulkesjr allenfoulkesjr

18-10-2020

Answer:

100

Step-by-step explanation:

because 5+5=10

the 10^2=10*10=100

Answer Link

18-10-2020

Answer:
35
Explanation:
Recall that (a+b)^2=a^2+2ab+b^2.
We can rearrange it in a way that would make it easier to solve our problem:
(a^2+b^2)+2ab
Now, we just plug in 25 for a^2+b^2, and plug in 5 for ab:
25+2*5
=25+10
=35

Answer Link

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