Question

Calculati:
${7}^{2} + {7}^{3} \times (( {7}^{4} ) ^{9} \div {7}^{34} + 7 \times {7}^{27} \div {7}^{26}) \div {49}^{2} = ...$
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Answer 1

Răspuns:

Explicație pas cu pas:

7² + 7³ x[ ( 7⁴)⁹ : 7³⁴ + 7 x 7²⁷ : 7²⁶] : 49² = 63

= 49 + 7³ x ( 7⁴ˣ⁹⁻³⁴ + 7¹⁺²⁷⁻²⁶ ) : 7²ˣ² =

= 49 + 7³ x ( 7² + 7² ) : 7⁴ =

= 49 + 7³ x [ 7² x (1 + 1 ) ] : 7⁴ =

= 49 + 7³⁺² x 2 : 7⁴ =

= 49 + 2 x 7⁵⁻⁴ =

= 49 + 2 x 7 =

= 49 + 14 =

= 63