Question

2) find the product. . [5-2x] 3+x]​

Answer 1

(5-2x)(3+x)

= 5(3+x)-2x(3+x)

= 15 + 5x - 6x - 2x²

= 15 - x - 2x²

= -2x²-x-15

Answer 2

(5 - 2x) (3 + x) = 15 - x - 2x²

Tips:

We must know Distributive Property of multiplication first:

a × (b + c) = a × b + a × c

Also, (a + b) × (c + d) = a × (c + d) + b × (c + d)

Step-by-step explanation:

Now, (5 - 2x) (3 + x)

= 5 (3 + x) - 2x (3 + x)

= 5 × 3 + 5 × x - 2x × 3 - 2x × x

= 15 + 5x - 6x - 2x²

= 15 - x - 2x²

• since x × x = x²

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