Question

Calculati: (5^2-4^2)


12×35-12×24+12.


[9^2-2^4×5^9:(5^4)^2]2^2.

Plssss dau stele si coroana!!​

Answer 1

Răspuns:

${5}^{2} - {4}^{2} = 25 - 16 = 9$

12×35-12×24+12=

420-12×24+12=

420-288+12=

=144 ==>

$\sqrt{144} = 12$

$( {9}^{2} - {2}^{4} \times {5}^{9} \div ( {5}^{4} ) ^{2} ) {2}^{2}$

$(81 - 16 \times 1.953.125 \div ( {5}^{4} ) ^{2} ) {2}^{2}$

(126.953.125÷390.625)2²

325×4=1300