Question

find it in a 8th class method​

Answer 1

Answer:

(2). ( $\frac{7}{4}$ )² = $3\frac{1}{16}$ ; (3). 2×2×11×11

Step-by-step explanation:

(2). ( $\frac{4}{7}$ )³ × $(\frac{7}{4}) ^{5}$ = $(\frac{7}{4}) ^{-3}$ × ( $\frac{7}{4}$ )² = $\frac{49}{16}$ = $3\frac{1}{16}$

(3). 484 = 2×242 = 2×2×121 = 2×2×11×11