In this lesson on Square Roots and Radicals, Part 18, the focus is on rationalizing denominators when binomials containing square roots are involved. The concept of conjugates is introduced, and students are taught to multiply the numerator and denominator by the conjugate of the denominator to obtain a rational number in the denominator. Through examples, such as finding the conjugate of 2 minus the square root of 7 or solving 5 over square root of 11 minus 2 square root of 2, this lesson teaches students a key trick to solving rationalization problems.
Part 18 covers rationalizing the denominator when binomials containing square roots are in the denominator. Defines conjugates.
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