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

User Bbrinx
by
8.0k points

2 Answers

5 votes

Answer:

25

Explanation:

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

User Duy Anh
by
8.7k points
6 votes

Answer:


\large\boxed{5^2=25}

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

User Vladimir Romanov
by
8.3k points

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