Question

Stephen factored x2−10x 21 and found the answer to be (x 7)(x 3). Is he correct? Question 4 options: yes no.

Answer 1

The true statement is that Stephen's factored expression is incorrect.

Given

The expression is given as:

$\rm x^2-10x+21$

What is factorization?

Factorization involves splitting a function into factors.

Start by expanding the equation

$\rm x^2-10x+21=0\\\\x^2-7x-3x+21=0$

Factorize the equation

$\rm x^2-7x-3x+21=0\\\\x(x-7)-3(x-7)=0$

Factor out x - 7

$\rm x(x-7)-3(x-7)=0\\\\(x-7)(x-3)=0$

Hence, the true statement is that Stephen's factored expression is incorrect.

Read more about factored expressions at:

brainly.com/question/11579257