Mathematics: Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x. a. x=-6 + or - the square root of 82 b. x=-6 + or - 2 with the square root of 17 c. x=1 +or - the square root of 33 d. x= 1 + or - the square root of 47

Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x. a. x=-6

Ответ:

poohbaby7163

14.01.2022

2x2 +3x -7 =x2 +5x +39
2x2 +3x -7 -x2 -5x -39=0
x2 - 2x -46 =0
(x-1)2 -46 -1 =0
(x-1)2 -47=0
(x-1)2 = 47
x-1= + or - the square root of 47
x= 1 + or - the square root of 47

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Ответ:

ChronicGamingRB

15.01.2020

Mathematics

1. A 2. A 3. A 4. A Kind of odd that they all turn out to A.

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Solve 2x2 + 3x – 7 = x2 + 5x + 39 for x.

a. x=-6 + or - the square root of 82
b. x=-6 + or - 2 with the square root of 17
c. x=1 +or - the square root of 33
d. x= 1 + or - the square root of 47

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