Question

3 question (3)one plz ans don’t spam it is very important for me ‍♀️‍♀️‍♀️‍♀️‍♀️‍♀️‍♀️

Answer 1

Step-by-step explanation:

iii)

$\sqrt[4]{625} - 3 \sqrt[3]{1728 } + 5 \sqrt{625} - 3 \sqrt[3]{27} \\ = ( {5}^{2} {5}^{2} ) \frac{1}{4} - 3( {2}^{3} \times {2}^{3} \times {3}^{3} ) \frac{1}{3} + 5( {25}^{2} ) \frac{1}{2} - 3( {3}^{3} ) \frac{1}{3} \\ = {5}^{4} \times \frac{1}{4} - 3( {2}^{3} \frac{1}{3} \times {2}^{3} \frac{1}{3} \times {3}^{3} \frac{1}{3} ) + 5( {25}^{2} \frac{1}{2} ) - 3( {3}^{3} ) \frac{1}{3} \\ = 5 - 3(2 \times 2 \times 3) + 5(25) - 3(3) \\ = 5 - 3(12) + 125 - 9 \\ = 5 - 36 + 125 - 9 \\ = 130 - 45 \\ = - 85$

v)(7+4√3)(7-4√3)

= {(7)^2-(4√3)^2}

={49-16(3)}

=49-48

=1

vi)(2+√3)(5+√3)

=(10+2√3+5√3+3)

=10+√3(2+5)+3

=13+7√3