Question

Given that p=4, q=2, r=3, s=5.
Evaluate the following expressions

1) 3r-3p+5q
2) -p-q+r+s
3) p(q-r+s)
4) r(2p-3q)
5) 2s(3p-2q)
6) pq+rs

Answer 1

Answer:

hope it is helpful

Step-by-step explanation:

(1) 3×3-3×4+5×2=7 (2) -4-2+3+5= 0 (3) 4(2-3+5)= 16 (4) 3(2×4-3×2)= 6 (4) 2×5(3×4-2×2) = 80 (5) 4×2+3×5 = 23

Answer 2

1.3r-3p+5p
3 x 3 - 3 x 4 + 5 x 2
9-12+10
9-22
-13
2. -p - q + r +s
-4-2+3+5
-6+8
-2
3. p(q-r+s)
4(2-3+5)
4(-5+5)
4(0)
0
4.r(2p-3q)
3(2 x 4 - 3 x 2)
3 (8-6)
3(2)
6
5. 2s(3p-2q)
2 x 5(3 x 4 - 2 x 2)
10(12-4)
10(7)
70
6.pq+rs
(4)(2)+(3)(5)
10+15
25



I hope it helps u ....:-)