Question

1. If x = 2, y = 1, find the value of each of the following expressions :
(i) 2x + 3
(ii) 4y - 6
(iii) 4x² - 5
(iv) y² – 2y
(v) x² + y² - xy
(vi) x² - y²​

Answer 1

Answer:

i) 2(2)+3

4+3

7

ii) 4(1)-6

4-6

= -2

iii) 4(2)^2-5

4(4)-5

16-5

11

iv) (1)^2-2(1)

1-2

-1

v) (2)^2+(1)^2-(2)(1)

4+1-2

5-2

3

vi) (2)^2-(1)^2

4-1

3

HOPE ITS HELP U