I need the real answer for this one please!?

x = ± 7

Step-by-step explanation:

Given

x² - 48 = 1 ( add 48 to both sides )

x² = 49 ( take the square root of both sides )

x = ± = ± 7

go on the tube you might find some information there

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: