25x { }^(2) + (5x - 3)(2x + 7) - 9 ​

Question

`25x { }^(2) + (5x - 3)(2x + 7) - 9`
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Answer 1

35x² + 29x - 30

Explanation:

Given

25x² + (5x - 3)(2x + 7) - 9 ← expand factors using FOIL

= 25x² + 10x² + 29x - 21 - 9 ← collect like terms

= 35x² + 29x - 30

Answer 2

Explanation:

`5x - 3 * 7x + 10`