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a fost răspuns

Calculand (4x-3)²-(3x-2)²+(2x+5)² ,obtinem rezultatul.
Daca x-2y=6 si x²-4y²=24, atunci a=x+2y+(x+2y)²+(x+2y)³+(x+2y) la a patra este.

Răspuns :

Renatemambouko
(4x-3)²-(3x-2)²+(2x+5)²=
=16x²-24x+9-9x²+12x-4+4x²+20x+25=
=11x²+8x+30

x-2y=6
x²-4y²=24(x-2y)(x+2y)=24
(x+2y)=24:6=4
a=x+2y+(x+2y)²+(x+2y)³+(x+2y)⁴=
=4+4²+4³+4⁴=4+16+64+256=340



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