Simplify: 7x + 4 {X2 ÷ (5x ÷ 10)} − 3 {2 − X3 ÷ (3x2 ÷ X)} - Mathematics

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Sum

Simplify: 7x + 4 {x2 ÷ (5x ÷ 10)} − 3 {2 − x3 ÷ (3x2 ÷ x)}

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Solution

7x + 4 {x2 ÷ (5x ÷ 10)} − 3 {2 − x3 ÷ (3x2 ÷ x)}

`=7"x"+4{"x"^2 ÷ ((5"x")/10)}-3{2-"x"^3÷((3"x"^2)/"x")}`

`=7"x"+4{"x"^2÷"x"/2}-3{2-"x"^3÷3"x"}`

`=7"x"+4{"x"^2xx2/"x"}-3{2-"x"^3/(3"x")}`

= 7x + 8x − 6 +x

= x2 + 15x − 6

Concept: Simplification of Expressions
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Chapter 11: Algebraic Expressions - Exercise 11 (E) [Page 147]

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (E) | Q 1.15 | Page 147
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