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In this lesson, we learn how to combine radical expressions through addition and subtraction, when they share like radicands. We also explore the Distributive Property to simplify complex expressions involving radicals. Each example demonstrates step-by-step simplifications, guiding you through the process of tackling expressions like (5sqrt{2} + 3sqrt{2}) or (2sqrt{27a^5} - 4asqrt{12a^3}). Master these techniques to enhance your understanding of radical expressions and improve your algebraic skills.
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Radical expressions can only be combined by addition or subtraction if they have like radicands. The Distributive Property can be used to simplify such expressions. Simplify the following: 5Ö2 + 3Ö2 = (5 + 3)Ö2 = 8Ö2 -7Ö2x + 3Ö2x = (-7 + 3)Ö2x = -4Ö2x cannot be simplified because the radicals do not have like radicands 8Ö2 + 7Ö3
Simplify each of the following expressions: 4Ö8 – 10Ö2 4Ö4Ö2 – 10Ö2 = 8Ö2 – 10Ö2 = -2Ö2 = 8Ö18x – 2Ö32x 8Ö9Ö2x – 2Ö16Ö2x = 24Ö2x – 8Ö2x = 16Ö2x =
Simplify each of the following expressions: 3Ö12x3 – 2xÖ3x = 3Ö4x2Ö3x – 2xÖ3x 6xÖ3x – 2xÖ3x = 4xÖ3x = 2aÖ8ab2 – 2bÖ2a3 = 2aÖ4b2Ö2a – 2bÖa2Ö2a 4abÖ2a – 2abÖ2a = = 2abÖ2a
Simplify each of the following: 2xÖ8y – 3Ö2x2y + 2Ö32x2y – 3Öx2Ö2y 2xÖ4Ö2y + 2Ö16x2Ö2y = = 4xÖ2y – 3xÖ2y + 8xÖ2y = 9xÖ2y
Simplify each of the following: 2Ö27a5 – 4aÖ12a3 + a2Ö75a 2Ö9a4Ö3a – 4aÖ4a2Ö3a + a2Ö25Ö3a = = 6a2Ö3a – 8a2Ö3a + 5a2Ö3a = 3a2Ö3a