Question

Find the value of the following algebraic
expressions, if m=1,n=-2, p=3,x=2m and y=3n:
(i) mi+mnp-11 (ii) x+5y-6
mº +2mn+n
(iv)
xy
x² - y²
(iii) mnp​

Answer 1

Answer:

1. m=1

i=?

n=-2

p=3

1×i+1×-2×3

i+(-6)

i=6

2. x+5y-6

2m+5×3n-6

2×1+5×3×-2-6

-34

3. m+2mn+n

1+2×1×-2+(-2)

1-4-2

-5

4.xy

2m×3n

2×1×3×-2

-12

5.x^2-y^2

2m×2m-3n×3n

2×1×2×1-3×-2×3×-2

-32

6.mnp

1×-2×3

-6