Find the exact value. 1.) √49 2.) - √144 3. Use a calculator to approximate the value of √(82/16) to the nearest tenth.

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Presentation transcript:

Find the exact value. 1.) √49 2.) - √ Use a calculator to approximate the value of √(82/16) to the nearest tenth.

Algebra II

Solve quadratic equations by finding square roots.

Square root – a number r if r 2 = s (another number) Radical – the expression √s, the symbol √ is a radical sign Radicand – The number underneath the radical sign.

Product Property √ab = √a * √b Quotient Property √(a/b) = √a / √b

Simplify the expression. A.) √75 B.) √7 * √35 C.) √(100/169) D.) √(11/144)

Rationalizing the denominator means to eliminate the radical sign from the denominator. Form of the denominatorMultiply the numerator and denominator by: √b a + √ba - √b a + √b

A.) √(2 / 15) B.) √2

Solve 2x 2 – 15 = 65

Pg. 270 (22 – 32 first 2 columns)

Pg. 269 (3 – 18 all)