Y = 24 - 5x
2x + 3( 24 - 5x ) = 33
2x + 72 - 15x = 33
- 13x = - 39
X = 3
y = 24 - 15 = 9
Ответ ( 3 ; 9 )
-3x+12>x-4x+4
-3x+3x>4-12
0>-8
x∈(-∞;∞)
<span>(Х-2)(х+3)-9=х-6
x</span>²+3x-2x-6-9=x-6
x²+x-15-x+6=0
x²-9=0
(x-3)(x+3)=0
x1=3
x2=-3
(1-n)(3n2-2n) ответ −4n2+4n
(2a-3b)(3a2+5ab-4b2) ответ 10a2b−15ab2−34ab+12a2+24b2