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| 1. |
Show that (4xy + 3y)²– (4xy - 3y)² = 48xy² |
| Answer» PROVED by the FORMULA :a² - b² = (a - B)(a + b)Step-by-step EXPLANATION:(4XY + 3y)² = (4xy + 3y)(4xy + 3y)(4xy - 3y)² = (4xy + 3y)(4xy - 3y) a² - b² = (a - b)(a + b)(4xy + 3y)² - (4xy - 3y)² = (4xy + 3y - 4xy + 3y)(4xy + 3y + 4xy - 3y) = 4xy - 4xy + 3y + 3y × 4xy + 4xy + 3y - 3y = 0 + 6y × 8xy - 0 = 6y × 8xy = 48xy²Hence proved..!Hope it helps u..! | |