Question

what number should be added to the expression x^2 + 10x to change it into a perfect square trinomial?​

Answer 1

Answer:

25

Step-by-step explanation:

In case anyone was confused the answer is 25. took the test.

Answer 2

Answer:

$\large\boxed{5^2=25}$

Step-by-step explanation:

$\text{Perfect square:}\ (a+b)^2=a^2+2ab+b^2\\\\x^2+10x\\\Downarrow\\x^2+2(x)(5)\\\Downarrow\\x^2+2(x)(5)+5^2=(x+5)^2$