97seouls
06.01.2020 •
Mathematics
The function y = – 3 is graphed only over the domain of {x | –8 < x < 8}. what is the range of the graph? {y | –5 < y < 5} {y | –5 < y < –1} {y | 1 < y < 5} {y | 1 < y < –1}
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Ответ:
17. First expand the left side:-
(2x + 1)(ax + b)
= 2ax^2 + ax + 2bx + b
= 2a x^2 + x(a + 2b) + b = 6x^2 - 5x + c.
Comparing coefficients:-
2a = 6 so a = 3
a + 2b = -5
3 + 2b = -5
2b = -5 - 3 = -8
b = -4
Also b = c, so c = - 4
a = 3, b = -4 and c = -4