Question

question express (x - 7)^2 as a trinomial in standard form. answer attempt 1 out of 2

Explanation:

Step1: Recall the formula

Use the formula $(a - b)^2=a^2-2ab + b^2$. Here $a = x$ and $b = 7$.

Step2: Substitute values

Substitute $a=x$ and $b = 7$ into the formula: $x^2-2\times x\times7+7^2$.

Step3: Simplify

Simplify the expression: $x^2-14x + 49$.

Answer:

$x^2-14x + 49$