lolorichards123
13.09.2021 •
Mathematics
Please explain how to simplify it.
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Ответ:
Ответ:
See answers below :)
Step-by-step explanation:
2a + 4(7 + 5a) =
14a + 10a² + 28 + 20a =
34a + 10a² + 28
4(3x + 2) - 5(7x + 5) =
12x + 8 - 35x - 25 =
-23x - 17
x(x + 5) =
x² + 5x
(2x + x)(x + 6) =
2x² + 12x + x² + 6x =
3x² + 18x
Ответ:
n=k*z*(x+y)²
with n=18,x=2,y=1 and z=3
==>18=k*3*(2+1)²
==>k=18/27=2/3