Answer:
([tex]\sqrt{7}[/tex] - x )([tex]\sqrt{7}[/tex] + x )
Step-by-step explanation:
Using the difference of squares
a² - b² = (a - b)(a + b) , then
7 - x²
= ([tex]\sqrt{7}[/tex] )² - x²
= ([tex]\sqrt{7}[/tex] - x)([tex]\sqrt{7}[/tex] + x)
