(5x + 2)(4x + 7)?
回答 (8)
✔ 最佳答案
20x^2+35x+8x+14
20x^2+43x+14
20 x ² + 35 x + 8 x + 14
20 x ² + 43 x + 14
(5x + 2)(4x + 7)
= 5x*4x + 2*4x + 5x*7 + 2*7
= 20x^2 + 8x + 35x + 14
= 20x^2 + 43x + 14
Using FOIL (First, Outer, Inner, Last) we get the expression
20x^2 + 35x + 8x + 14
Combining similar terms,
20x^2 + 43x + 14
Points please!
20x^2+43x+14
only use the foil method
(5x+2)(4x+7)
20x^2+35x+8x+14
20x^2+43x+14
use quadratic equation
the answer will be
20x squared + 43x + 14
Multiply the first terms (5x and 4x), then the outside terms (5x and 7), then the inside terms (2 and 4x), and then the last terms (2 and 7). Combine like terms and you wind up with 20x^2+43x+14
收錄日期: 2021-05-01 09:54:23
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