Question

Simplify the following expressions. 1. 24-3x 15+5 2.5 - 8 + 4 of 2 - 1 3.40 + (4x2)-2 J. (3x (7 + 18) (2 + 13)-4, 5.54 + (14 - 10+2)*3 6.5+ 56+ (42 + (1 + 2)* 2) + 13 7. 15 -[{(8+4)* 4} + 12 + 7)​

Answer 1

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Class 8

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Add the following expressions:

(3/4)x

2

,5x

2

,−3x

2

,−(1/4)x

2

Medium

Solution

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In the above questions terms having the same literal factors are like terms.

Now add the like terms.

=(3/4)x

2

+5x

2

−3x

2

−(1/4)x

2

=(3/4)x

2

−(1/4)x

2

+5x

2

−3x

2

=(

4

(3−1)

)x

2

+2x

2

=(

4

2

x

2

+2x

2

)

=

2

1

x

2

+2x

2

=(

2

(1+4)

)x

2

=

2

5

x

2