Can you solve this function ?

Question

Evaluate each of the following when: f(x)= 2x^2 -7 and g(x)= -4x -6

1). 2f(-2) + g(3)

2). -3f(5) +3g(-3)

Answer 1

2f(-2) + g(3)

f(-2) =2(2)^2 -7 = 1

g(3) = -4*3-6 = -18

= 2*1 +-18 = 2-18 = -16

2). -3f(5) +3g(-3)

f(5) = 2(5)^2 -7 = 43

g(-3) = -4*-3-6 = 6

-3*43 + 3*6

= -129 +18

  = -111

  

Answer 2

1.  2 [2*(-2)^2 - 7] + [-4*3 + - 6]

= 2[1] + [-18]

= -16

2. -3 [2*(5)^2 - 7] + 3 [-4(-3) - 6]

= -3 [43] + 3 [6]

= -129 +18

= -111

Answer 3

f(-2) = 2(-2)^2-7 = 2(4)-7=1

g(3)=-4(3)-6=-18

2f(-2)+g(3) = 2(1)-18 =-16

2)

f(5) = 2(5)^2-7 =43

g(-3) = -4(-3)-6 =6

-3f(5)+3g(3)=-3(43)+3(6) =-129+18=-111