Question

(I) 2p + 3q + 4r + pqr when p equal to 1, q equal to 2 and r equal to 3

(2) 3ab + 4bc - 5ca when a equal to 4, b equal to 5 and c equal to 2

Answer step by step.
If the answer is correct I will mark you as a Brainiest.​

Answer 1

$\large\sf\underline{Question\:1\::}$

• 2p + 3q + 4r + pqr = ?

when ‎ :

• p = $\tt\red{1}$

• q = $\tt\red{2}$

• r = $\tt\red{3}$

‎

$\large\sf\underline{Solution\::}$

$\sf\:2p + 3q + 4r + pqr$

‎

• Substituiting the given values

‎

$\sf\rightarrow\:2(1) + 3(2) + 4(3) + 1 \times 2 \times 3$

‎

• Multiplying the terms

‎

$\sf\rightarrow\:2 + 6 + 12 + 6$

‎

• Now adding the terms

‎

$\sf\rightarrow\:8 + 12 + 6$

$\sf\rightarrow\:20 + 6$

$\small\fbox\pink{→\:26}$ ★

‎

___________________________

$\large\sf\underline{Question\:2\::}$

• 3ab + 4bc - 5ca = ?

when ‎ :

• a = $\tt\red{4}$

• b = $\tt\red{5}$

• c = $\tt\red{2}$

‎

$\large\sf\underline{Solution\::}$

$\sf\:3ab + 4bc - 5ca$

‎

• Substituiting the given values

‎

$\sf\rightarrow\:3(4 \times 5) + 4 (5 \times 2) -5(2\times 4)$

‎

• Multiplying the terms

‎

$\sf\rightarrow\:3 (20) + 4 (10) - 5(8)$

$\sf\rightarrow\:60+ 40 - 40$

‎

• Now adding the terms

‎

$\sf\rightarrow\:100-40$

‎

• Now subtracting

‎

$\small\fbox\pink{→\:60}$ ★

‎

___________________________

!! Hope it helps !!

Answer 2

Answer:

good evening sis

r u remembered me or not