Question

Simplify the following.
i.(-3x) * (-4x2y2) x (5.5y3)
ii.4(x - 2) + 4(x - 3) + 3(x – 4)
iii. x(2 + 5x) + 10x2 – 5x(2x - 3)
iv. 3(a + 3) + 4(a + 2) + 5(a + 4)
v.a(3a + 4b) + b(3a + 4b)
please give this answer
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Answer 1

a ) ( - 3x ) × ( - 4x²y² ) × ( 5.5y³ )

- 3x³ ( - 4 )y² × 5.5y³

- 3x³ ( - 4 ) y⁵ × 5.5

12x³y⁵ × 5.5

66x³y⁵

b ) 4 ( x - 2 ) + 4 ( x - 3 ) + 3 ( x - 4 )

4x - 8 + 4 ( x - 3 ) + 3 ( x - 4 )

4x - 8 + 4 ( x - 3 ) + 3 ( x - 4 )

4x - 8 + 4x - 12 + 3 ( x - 4 )

8x - 8 - 12 + 3 ( x - 4 )

8x - 20 + 3 ( x - 4 )

8x - 20 + 3x - 12

11x - 20 - 12

11x - 32

c ) x ( 2 + 5x ) + 10x² - 5x ( 2x - 3 )

2x + 5x² + 10x² - 5x ( 2x - 3 )

2x + 15x² - 15 ( 2x - 3 )

2x + 15x² - 10x² + 15x

2x + 5x² + 15x

17x + 5x²

d ) 3 ( a + 3 ) + 4 ( a + 2 ) + 5 ( a + 4 )

3a + 9 + 4 ( a + 2 ) + 5 ( a + 4 )

3a + 9 + 4a + 8 + 5 ( a + 4 )

7a + 9 + 8 + 5 ( a + 4 )

7a + 17 + 5 ( a + 4 )

7a + 17a + 5a + 20

12a + 17 + 20

12a + 37

e ) a ( 3a + 4b ) + b ( 3a + 4b )

3a² + 4ab + b ( 3a + 4b )

3a² + 4ab + 3ab + 4b²

3a² + 7ab + 4b²