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3 years ago

(5x + 4)(3x2 – 7x – 2)

Mathematics

1 answer:

Vaselesa [24]3 years ago

7 0

Answer:

5x4 - 3x2 + 9x - 7

Step-by-step explanation:

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(((5•(x4))+7x)+2)-((3x2-2x)+9)

Step 2 :

Equation at the end of step 2 :

((5x4 + 7x) + 2) - (3x2 - 2x + 9)

Step 3 :

Checking for a perfect cube :

3.1 5x4-3x2+9x-7 is not a perfect cube

Trying to factor by pulling out :

3.2 Factoring: 5x4-3x2+9x-7

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