Question

(a) (5 + √7)(2 + √5)​

Answer 1

Answer:

$(5 + \sqrt{7} )(2 + \sqrt{5} ) \\ 10 + 5 \sqrt{5} \times 2 \sqrt{7} + \sqrt{12} \\ 10 + 10 \sqrt{35} + \sqrt{12} \\ 10 + 3500 + \sqrt{12}$

Step-by-step explanation:

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Answer 2

$\Huge\bf\maltese{\underline{\green{Answer°᭄}}}\maltese$

$\implies$$\large\bf{\underline{\red{VERIFIED✔}}}$

$(5+√7)(2+√5)\\=5×2+5×√5+√7×2+√7×√5\\=10+5√5+2√7+√35.$

$\boxed{I \:Hope\: it's \:Helpful}$