Объяснение:
(2-х)(2+х)(4+х²)-(х-1)(3х²+1)+(6-х²)²=
(4-х²)(4+х²)-(3х³+х-3х²-1)+(36-12х²+х⁴)=
=16-х⁴-3х³-х+3х²+1+36-12х²+х⁴=
= -3х³-9х²-х+53
х= -2
-3×(-2)³-9×(-2)²-(-2)+53=
= -3×(-8)-9×4+2+53=24-36+2+53=43
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Объяснение:
(2-х)(2+х)(4+х²)-(х-1)(3х²+1)+(6-х²)²=
(4-х²)(4+х²)-(3х³+х-3х²-1)+(36-12х²+х⁴)=
=16-х⁴-3х³-х+3х²+1+36-12х²+х⁴=
= -3х³-9х²-х+53
х= -2
-3×(-2)³-9×(-2)²-(-2)+53=
= -3×(-8)-9×4+2+53=24-36+2+53=43