Answer:
a = x and b = 5
Step-by-step explanation:
Given
a² + 2ab + b² = (a + b)², then compare
x² + 10x + 25 to it
b² = 25 ⇒ b = [tex]\sqrt{25}[/tex] = 5
a² = x² ⇒ a = x
and 2ab = 2 × x × 5 = 10x, thus
x² + 10x + 25 = (x + 5)²
