Question

(7x+a)²=(7x)²+a²+2*7x*a

Answer 1

Это формула получается 7 икс в квадрате это 49икс +а в квадрате+14AX

Answer 2

That's not correct. The equation you provided is incorrect. The correct expansion of the left-hand side of the equation (7x + a)^2 is as follows:

(7x + a)^2 = (7x + a)(7x + a) = 49x^2 + 27xa + a^2

So, the correct equation is:

(7x + a)^2 = 49x^2 + 27xa + a^2