Question

if a = -2, b = -3 and C = 2 then find the value of each of the following with solution (1) ab + bc + ca please help mee​

Answer 1

Answer:

-4

Step-by-step explanation:

we are having the values of a = -2, b = -3 and c = 2.

so, ab+bc+ca = -2×-3+-3×2+2×-2

by substituting values of a,b and c.

according to DMAS, we have the answer as:

6-6-4 = -4

Answer 2

Given :

• a = - 2
• b = - 3
• c = 2

To find :

• The value of ab + bc + ca

According to the question,

→ ab + bc + ca

→ Substituting the values,

→ (-2) × (-3) + (-3) × 2 + 2 × (-2)

→ 6 + (-6) + (-4)

→ 6 - 6 - 4

→ 0 - 4

→ - 4

So,the value of ab + bc + ca is (-4).

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

═══════════════════

Signs are changed on the following bases :-

• (-) × (-) = +

• (+) × (-) = -

• (+) × (+) = +

• (-) × (+) = -