Question

(x-1)^2+(2x+1)^2= ? Решите плиз

Answer 1

x^2-2x+1+4x^2+4x+1=5x^2+2x+2

Answer 2

To find the value of the expression (x-1)^2 + (2x+1)^2, we need to expand and simplify it.

Step 1: Expand the expressions within parentheses. (x-1)^2 = (x-1)(x-1) = x^2 - 2x + 1 (2x+1)^2 = (2x+1)(2x+1) = 4x^2 + 4x + 1

Step 2: Add the two expanded expressions together. (x^2 - 2x + 1) + (4x^2 + 4x + 1) = x^2 + 4x^2 - 2x + 4x + 1 + 1 = 5x^2 + 2

So, the simplified expression is 5x^2 + 2.