Question

(165 +2х)^2 =
(22х +153)^2=
​

Answer 1

$(165 + 2x) {}^{2} = 165 {}^{2} + 2 \times 165 \times 2x + (2x) {}^{2} \\ 27225 + 660x + 4x {}^{2}$

делал по формуле (a+b)²=a²+2ab+b²

$(22x + 153) {}^{2} \\ (22x) {}^{2} + 2 \times 22x \times 153 + 153 {}^{2} \\ 484x {}^{2} + 6732x + 23409$

делал 2-ое по такой же формуле

Answer 2

$\displaystyle 1)(165+2x)^2=165^2+2x*165*2x+(2x)^2=27225+660x+4x^2\\\\ 2)(22x+153)^2=(22x)^2+2*22x*153+153^2=484x^2+6732x+23409$