Question

Add :-3×(7x²-5x+3)and 2(x³ -4x²+5).​

Answer 1

Answer:

x3+11x2+8

Step-by-step explanation:

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Answer 2

Given:

Two expressions:

3(7x² - 5x + 3)

2(x³ - 4x² + 5)

What To Find:

We have to find the sum of the expressions.

Solution:

[3(7x² - 5x + 3)] + [2(x³ - 4x² + 5)]

Remove the bigger brackets,

⇒ (21x² - 15x + 9) + (2x³ - 8x² + 10)

Remove the brackets,

⇒ 21x² - 15x + 9 + 2x³ - 8x² + 10

Rearrange the like terms,

⇒ 2x³ + 21x² - 8x² - 15x + 9 + 10

Solve the like terms,

⇒ 2x³ + 13x² - 15 x + 19

∴ So, the sum of the two expressions are 2x³ + 13x² - 15 x + 19.