Question

any one ur choice but give me correct answer with process​

Answer 1

Step-by-step explanation:

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Answer 2

Concept:

There are constants and variables in a algebraic expression.

Variables are symbols not having a fixed numerical value and can take various values.

Eg - a, c, e, x, etc.

Constants are symbols having a fixed numerical value.

Eg - 1, 6, 9, 2, etc.

Question:

• Find the product : (x + y)(2x + 3y - 5)

Solution:

(x + y)(2x + 3y - 5)

x(2x + 3y - 5) + y(2x + 3y - 5)

2x² + 3xy - 5x + 2xy + 3y² - 5y

2x² + 3y² + 3xy + 2xy - 5y - 5x

2x² + 3y² + 5xy - 5x - 5y

Question:

• a(b - c) - b(c - a) - c(a - b)

Solution:

a(b - c) - b(c - a) - c(a - b)

$ab-ac-\cancel{bc}+ab-ac+\cancel{bc}$

ab + ab - ac - ac

2ab - 2ac

More Explanation:

You can use these important steps while solving any equations like this :-

( + ) × ( – ) = ( – )

( + ) × ( + ) = ( + )

( – ) × ( + ) = ( – )

( – ) × ( – ) = ( + )