Question

Simplify (a2+5)(b2+3)+5​

Answer 1

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$\sf \red{( {a}^{2} +5)( {b}^{2} +3)+5}$

= a²(b²+3)+5(b²+3)+5

= a²(b)²+a²(3)+a²(5)+5(b)²+5(3)+5(5)

= a²b²+3a²+5a²+5b²+15+25

= a²b²+8a²+5b²+45

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