Exponents of Algebraic Expressions (Class-7, Experience- 2) - Active Math Class

Exponents of Algebraic Expressions (Class-7, Experience- 2)

[Exercise- page 56]

E.2.1

i) (3³a^-5b³⁾

ii) (s⁵3⁴)³

iii) (st⁷rt³)³

Solution:

E.2.2 Determine the square of the following expressions by cutting paper and submit to teacher.

i) a + 3

i) 3x - 5

iii) 999

iv) 2x + y +3z

v) 2x + 3y + 4z

Solution:

E.2.3 Prove it by cutting paper

i) a² + b² = (a - b)² + 2ab

ii) (a - b)² = (a + b)² - 4ab

iii) (a + b)² = (a - b)² + 4ab

iv) (a + b)² + (a - b)² = 2(a² + b²)

v) (a + b)² - (a - b)² = 4ab

Solution:

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