Algebra
Calculus
Trigonometry
Matrix
Question
Factor the expression
(2−h)(2+h)
Evaluate
4−h2
Rewrite the expression in exponential form
22−h2
Solution
(2−h)(2+h)
Show Solution
Find the roots
h1=−2,h2=2
Evaluate
4−h2
To find the roots of the expression,set the expression equal to 0
4−h2=0
Move the constant to the right-hand side and change its sign
−h2=0−4
Removing 0 doesn't change the value,so remove it from the expression
−h2=−4
Change the signs on both sides of the equation
h2=4
Take the root of both sides of the equation and remember to use both positive and negative roots
h=±4
Simplify the expression
More Steps
Evaluate
4
Write the number in exponential form with the base of 2
22
Reduce the index of the radical and exponent with 2
2
h=±2
Separate the equation into 2 possible cases
h=2h=−2
Solution
h1=−2,h2=2
Show Solution