7(x+4) for x=5please answer asapdon't answer if you absulutly don't know
1 answer:
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&
so ,
.
<u>Step-by-step explanation:</u>
Here we have , ab= 8 & a^2+b^2=16 i.e. and
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We need to find value of (a+b)^2 i.e. :
It's and identity and we know that
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⇒
⇒
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⇒
∴ &
so ,
.