Question

find the product of (3+2root5)(2root5-7)

Answer 1

Answer:

here it is

Step-by-step explanation:

2√5 + 3√7 = 2*2.24 + 3*2.65

                = 12.43

Answer 2

Step-by-step explanation:

$\huge\sf\underline\green{answer}$

given,

$(3 + 2 \sqrt{5}) \times (2 \sqrt{5} - 7)$

to find,

simplify the given expression

$\huge\bf\underline\blue{solution}$

$(3 + 2 \sqrt{5}) \times (2 \sqrt{5} - 7)$

$3(2 \sqrt{5} - 7) + 2 \sqrt{5}(2 \sqrt{5} - 7)$

$6 \sqrt{5} - 21 + 20 - 14 \sqrt{5}$

$- 1 - 8 \sqrt{5}$

$- 1(1 + 8 \sqrt{5} )$