(2x²+4x-5) (4x+5)plz solve this problem
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Answer:
8x³ + 26x² - 26
Step-by-step explanation:
(2x² + 4x - 5) (4x + 5)
= 2x² × (4x + 5) + 4x × (4x + 5) - 5 × (4x + 5)
= 2x² × 4x + 5 + 4x × 4x + 5 - 5 × 4x - 5
= 8x³ + 10x² + 16x² + 20x - 20x - 25
= 8x³ + 26x² + 0 - 25
= 8x³ + 26x² - 26
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