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Simplify the following expression:

[tex]\[ \left[ a^2 b^3 - 6xy^2 + \frac{3}{5} a^2 b^3 - 18xy^2 - 30 \right] \times \left[ \frac{6}{3} a^2 b^3 + \frac{21}{3} a^2 b^3 \right] \][/tex]


Sagot :

Sure! Let's solve the given algebraic expression step by step:

We are given the expression:
[tex]\[ \left[a^2 b^3 - 6 x y^2 + \frac{3}{5} a^2 b^3 - 18 x y^2 - 30\right] \times \left[\frac{6}{3} a^2 b^3 + \frac{21}{3} a^2 b^3\right] \][/tex]

### Simplifying the First Term:

First, let's simplify each term within the square brackets:

1. Combining like terms involving [tex]\(a^2 b^3\)[/tex]:
[tex]\[ a^2 b^3 + \frac{3}{5} a^2 b^3 \][/tex]
Factoring out [tex]\(a^2 b^3\)[/tex]:
[tex]\[ a^2 b^3 \left(1 + \frac{3}{5}\right) = a^2 b^3 \left(\frac{5}{5} + \frac{3}{5}\right) = a^2 b^3 \left(\frac{8}{5}\right) \][/tex]
[tex]\[ = \frac{8}{5} a^2 b^3 \][/tex]

2. Combining like terms involving [tex]\(xy^2\)[/tex]:
[tex]\[ -6 x y^2 - 18 x y^2 \][/tex]
Factoring out [tex]\(xy^2\)[/tex]:
[tex]\[ -24 x y^2 \][/tex]

So, the first term simplifies to:
[tex]\[ \frac{8}{5} a^2 b^3 - 24 x y^2 - 30 \][/tex]

### Simplifying the Second Term:

Next, let's simplify the second term within the square brackets:

1. Simplifying each term individually:
[tex]\[ \frac{6}{3} a^2 b^3 = 2 a^2 b^3 \][/tex]
[tex]\[ \frac{21}{3} a^2 b^3 = 7 a^2 b^3 \][/tex]

2. Combining like terms:
[tex]\[ 2 a^2 b^3 + 7 a^2 b^3 = 9 a^2 b^3 \][/tex]

So, the second term simplifies to:
[tex]\[ 9 a^2 b^3 \][/tex]

### Combining Both Terms:

Now, multiplying the two simplified terms together:
[tex]\[ \left( \frac{8}{5} a^2 b^3 - 24 x y^2 - 30 \right) \times \left( 9 a^2 b^3 \right) \][/tex]

Therefore, the simplified form of the given expression is:
[tex]\[ \left( \frac{8}{5} a^2 b^3 - 24 x y^2 - 30 \right) \times \left( 9 a^2 b^3 \right) \][/tex]