Question

The expression ( 50 + 70 + 30 )2 is equals to

Answer 1

Answer:

Step-by-step explanation:

(50+70+30)2

=(150)2

=300

hope this helps you

Answer 2

Using the formula:

(a+b+c)² = a² + b² +c² + 2ab + 2bc + 2ca

Here

a = 50

b = 70

c = 30

$(50 + 70 + 30)^{2}$

$= {50}^{2} + {70}^{2} + {30}^{2} + 2(50)(70) + 2(70)(30) + 2(30)(50) \\ \\ = 2500 + 4900 + 900 + 7000 + 4200 + 3000 \\ \\ = 22500$

The answer is 22,500.

Hope it helps