amydunn2004
amydunn2004 amydunn2004
  • 02-06-2017
  • Mathematics
contestada

Find the value of 2a² + 5b² when a= -6 and b= 2

Respuesta :

PHDFlopper
PHDFlopper PHDFlopper
  • 02-06-2017
2(-6^2)+5(2^2)
2(36)+5(4)
72+20
92
Answer Link
Susuu
Susuu Susuu
  • 02-06-2017
Plug in the values -6 into 'a' and 2 into 'b'. 

2a² + 5b² 
2(-6)² + 5(2)²
First solve the exponents  ⇒  -6² means -6 * -6, which equals 36
2² = 2*2 = 4

2(36) + 5(4)
2*36 → 72
5*4 = 20
72 + 20 = 92  

Final answer → 92

Answer Link

Otras preguntas

a doctor asked a patient to take 5 ml of a medicine 3 times a day for 5 days. how much medicine will he take​
Elsa bikes four miles. She stops to take a break every 2/3 mile. How many times will Elsa stop, INCLUDING her final stop at the end of her bike ride?
Which expression is equivalent to p+p+p? ​
I HAVE ANOTHER QUESTION PLEASE HELP
Pls help I’ll add extra points
I didn't understand ​
which tribe had the most trouble establishing a new constitution
Who pushed the British out of Persia in the 1920s, and renamed the country Iran? Mahmoud Ahmadinejad Mustafa Kemal Ayatollah Khomeini Reza Pahlavi.
The initial response of the united stated to the outbreak of war in korea was to:.
What is the most likely source of chlorine in the ocean.