Question

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

Step-by-step explanation:

$5x - 3 \times 7x + 10$

Answer 2

Answer:

35x² + 29x - 30

Step-by-step explanation:

Given

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

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

= 35x² + 29x - 30