Question

III. Answer the following questions:

11.Find the product of (x+4) (x-4)

12. Expand: 5x (3y – 2)

13. Find the value of l × b × h if l = 3pq, b= (-3p), and h = 2pq

14. Simplify: (3m² ÷ m) + (2m⁴ ÷ m³)

15. Identify the error and correct it: 6xy + 3xy = 9x²y²

IV. Do as directed:

16. A car moves at a uniform speed of (x + 20) Km/Hr. Find the distance covered by the car in(y+3) hours.​

Answer 1

Answer:

(x-4)(x+2)

(x)(x) + (x)(2) + (-4)(x) + (-4)(2)

x2 + 2x -4x - 8

x2 - 2x - 8

Answer 2

Answer:

11) (x+4)(x-4)

=x^2-4^2

=x^2-16

12) 15xy-10x

13) -18p^3q^2

14) 5m

15)6xy+3xy=9xy

16)xy+3x+20y+30