Question

(x − 7)2. solve please

Answer 1

Distributive:
2x - 14

Answer 2

2x-14

Answer 3

No, it's squared.

Answer 4

Just distribute it..
\[a(b - c) = ab - ac\]

Answer 5

\( \color{Black}{\Rightarrow (x - 7)(x - 7) }\)

\( \color{Black}{\Rightarrow x(x - 7) - 7(x - 7)}\)

\( \color{Black}{\Rightarrow x^2 - 7x - 7x + 49}\)

\( \color{Black}{\Rightarrow x^2 - 14x + 49}\)

Answer 6

let me give the answer of both :
1) \(\huge{2(x-7)=2(x)-2(7)=2x-14}\)

Answer 7

You don't ever write it as (x - 7)2 but 2(x - 7), so it is squared.
Believe me, I've seen a lot of questions like these.

Answer 8

If it is square, then use the formula:

\[(a-b)^2 = a^2 + b^2 - 2ab\]

Here a = x and b = 7

Put them and solve it further...