tj5essieannab tj5essieannab
  • 21-11-2016
  • Mathematics
contestada

Find (fg)(-4) when f(x) = x + 5 and g(x) = 5x2 + 10x - 5.

Respuesta :

HomertheGenius
HomertheGenius HomertheGenius
  • 22-11-2016
f g = ( x + 5 ) · ( 5 x² + 10 x - 5 ) = 
= 5 x³ + 10 x² - 5 x + 25 x² + 50 x - 25 = 5 x³ + 35 x² + 45 x - 25 =
= 5 ( x³ + 7 x² + 9 x - 5 ) 
(f g) ( - 4 ) = 5 * ( - 64 + 112 - 36 - 5 ) = 5 * 7 = 35
Answer Link

Otras preguntas

6. Under the English Westminster model, the highest court of appeals is?
a gallon of water weighs 8.354 pounds. Simon uses 11.81 gallons of water while taking a shower. about how many pounds of water did Simon use?
to find the product 3/7x4/9 ,Cameron simplified 3/7 to 1/7 and then multiplied the fractions 1/7 and 4/9 to find the product 4/63. What is Cameron's error?"
What is the sales tax for an item that costs $1400 and has a sales tax rate of 75% ?
If H= 2f over m+1, solve the equation for f Find the sum of 3b over b+2 and 12 over b+2 Solve 3 over 6x + 1 over 2 = 8 over x + 4 over 3 All different Questio
From 800–1200, the Khmer and Mon peoples moved into the northern regions of A. Cambodia. B. Thailand. C. Vietnam. D. Myanmar
1% of what number is 7
2y + 7y equal -20 find the value of y
Help Please! Which is a correct comparison of the fractions? 15/18 and 25/30A.15/18<25/30B.15/18>25/30C.15/18=25/30
Mrs. Baker paid $2.50 for 5 pounds of bananas. Write an equation relating to the cost to the number of pounds of bananas. How much would Mrs. Baker pay for 8 po