All ACT Math Resources
Example Question #1 : How To Find The Square Of Difference
Factor the numerator and denominator separately and then cancel similar terms.
x2 – 25 = (x + 5)(x – 5) Difference of two squares
x2 + 11x + 30 = (x + 5)(x + 6)
The (x+5) terms cancel out, leaving us with a final answer of:
Example Question #2 : Squaring / Square Roots / Radicals
can be rewritten as:
Use the formula for solving the square of a difference, . In this case,
Example Question #3 : Squaring / Square Roots / Radicals
To multiply a difference squared, square the first term and add two times the multiplication of the two terms. Then add the second term squared.