(3x+5y) x (5x-7y+2z) multiple algebraic expression chapter
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(3x + 5y) × (5x - 7y + 2z)
= 3x(5x - 7y + 2z) + 5y(5x - 7y + 2z)
= 15x² - 21xy + 6xz +25xy - 35y² +10yz
= 15x² = 35y² +4xy +10yz + 6xz
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