Răspuns :
afli
x patrat dupa care decompuo so dpa faci calculeel e usor cel putin mie asa mi-a iest
x patrat dupa care decompuo so dpa faci calculeel e usor cel putin mie asa mi-a iest
X²-x-90=x²-10x+9x-90=x(x-10)+9(x-10)=(x-10)(x+9)
4x^4+1=(2X²+1)²-4x²=(2x²+1+2x)(2x²+1-2x)
4x^4+1=(2X²+1)²-4x²=(2x²+1+2x)(2x²+1-2x)
