griproucoraSkylake griproucoraSkylake

31-08-2016
Mathematics

Answered

The function f(x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value?.

A 1.

B -1.

C 2.

D -2.

E -3

Verified Answer :

HomertheGenius HomertheGenius

02-09-2016

2 x² + 3 x + 5 = 19
2 x² + 3 x - 14 = 0
x 1/2 = (-3 +/- √ (9 + 112 ) )/4 = (-3+/-11)/4
x 1 = 2
x 2 = -7/2
Answer: C ) 2

Answer Link

Anonymous Anonymous

16-05-2019

Answer:

the answer is 2

Step-by-step explanation:

Answer Link

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