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General

Easy

Question

# Simplify: 4x^{2}(7x -5) -6x^{2}(2 -4x)+ 18x^{3}

## The correct answer is: 70x3 - 32x2

### Answer:

- Hint:

○ Group the like term.

○ Like terms are those whose coefficients are the same.

○ The term is decreasing in order of their power.

- Step by step explanation:

○ Given:

Expression: 4x^{2}(7x -5) -6x^{2}(2 -4x)+ 18x^{3}

○ Step 1:

○ simplify:

4x^{2}(7x -5) -6x^{2}(2 -4x)+ 18x^{3}

28x^{3} - 20x^{2} - 12x^{2} + 24x^{3} + 18x^{3}

○ Step 2:

○ Arrange the term in decreasing order of their power.

28x^{3 }+ 24x^{3} + 18x^{3} - 20x^{2} - 12x^{2}

70x^{3} - 32x^{2}

- Final Answer:

70x^{3} - 32x^{2}

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