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i need step by step directions for finding the square root of 9 times 4

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Jan 03, 2010
square root of (9 x 4)
by: Staff

Hello,

What is the square root of 9 x 4 ?

the problem: square root (9 x 4)

Method 1: multiply the 9 and 4 together, then compute the square root

9 x 4 = 36
Square root (36) = +-6 (two answers: +6 and -6)



Method 2: split the problem into two smaller problems:

(see: Radical Properties of Multiplication, covered in http://www.solving-math-problems.com/simplifying-radicals-multiplying-radicals.html)

square root (9 x 4) = square root (9) x square root (4)

the square root of 9 = +-3, and the square root or 4 is +- 2

multiply the two results: (+- 3) x (+-2) = +-6 (two answers: +6 and -6)


Staff
www.solving-math-problems.com






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