How to find the square of a sum

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SAT Math › How to find the square of a sum

Questions 1 - 2

1

Simplify the radical.

$\sqrt{3283}$

$7\sqrt{67}$

$56$

$57.3$

$7\sqrt{63}$

$67\sqrt{49}$

Explanation

We can break the square root down into 2 roots of 67 and 49. 49 is a perfect square and reduces to 7.

2

Simplify:

Explanation

If you don't already have the pattern memorized, use FOIL. It's best to write out the parentheses twice (as below) to avoid mistakes:

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