Question

Pls dau test va roggg

Answer 1

Răspuns:

1.

$(7^{22} +7x^{20} -7x^{21} =7x^{20} *x\\(7^{2} +1-7)*7^{20} =7^{20} x\\(49+1-7)*7^{20} =7^{20}x\\43*7^{20}=7^{20}x\\7^{20}x=43*7^{20}\\x=43$

2.  1,110101 * $10^{6}$

3.

$(16^{5} *8^{12} ):32^{11} =\\(2^{20} *2^{36} ):2^{55} =\\2^{56} :2^{55} =\\2$