Question

Помогите по алгебре пожалуйста

Answer 1

а)
$\sqrt{25 \times 81} = \sqrt{25} \times \sqrt{81} = 5 \times 9 = 45$

б)
$\sqrt{0.49 \times 16} = \sqrt{0.49} \times \sqrt{16} = 0.7 \times 4 = 2.8$

в)
$\sqrt{400 \times 2.25} = \sqrt{400} \times \sqrt{2.25} = 20 \times 1.5 = 30$

г)
$\sqrt{ \frac{9}{64} } = \frac{3}{8} = 0.375$

д)
$\sqrt{3 \frac{6}{25} } = \sqrt{ \frac{81}{25} } = \frac{9}{5} = 1.8$

е)
$\sqrt{2 \frac{46}{49} } = \sqrt{ \frac{144}{49} } = \frac{12}{7} = 1 \frac{5}{7}$

Answer 2

a)\|25*81= 5*9=45
б) \|0,49*16=0,7*4=2,8
в) \|400*2,25=\|900=30
г) \|9/64=3/8
д) \|81/25=9/5
е) \|144/49= 12/7