if a²+b² = 74 and ab = 35,then the value of a+b.

2

(a)

Factorise 15xy

2

(a)

Find and correct the errors in the following mathematical statements. Substituting x =- 3 in
x²+ 5x+ 4 gives (-3)² + 5 (-3) + 4 = 9 + 2 + 4 = 15

2

(a)

Find and correct the errors in the following mathematical statements. Substituting x =-3 in
x²- 5x+ 4 gives (-3)²- 5 (-3)+ 4= 9- 15 + 4=-2

2

(a)

Solve the following expression:
(pr yz - r xyz - q r xy) ÷ x y z

2

(a)

Solve the following algebraic expressions by factorising. [(x-y)² + (x -y) \(\div\) (x - y + 1)

2

(a)

Factorise the expressions and divide them as directed.39y³ (50y²- 98) \(\div\)26y² (5y+7)

2

(a)

Factorise the following expressions and divide them (p²- 14p - 32)\(\div\) (p +2)

2

(a)

Factorize 70 in the prime factors.

2

(a)

Factorise the following expressions. 5x²y - 15xy²

2

(a)

Factorise the following expressions:(l + m)² - 4lm

2

(a)

Factorise the following expressions: a⁴ + 2a²b² + b⁴

2

(a)

Factorise: 54x² - 96y²

2

(a)

Factorise: 81a⁴ - 16b⁴

2

(a)

Simplify: 4x²y²(3z - 24) \(\div \) 36xy(z - 8)

2

(a)