Question

Doprowadz wyrażenie do najprostrzej postaci:
a) 2x(x-5)+3(x kwadrat-2)+(x+4)kwadratu-2(x-2)(x+2)
b)4(3-xkwadrat)+4(x-1)do kwadratu -3x(2-x)+(3-x)(3+x)

Answer 1

A) ..=2xkwadrat-10x+3xkwadrat-6+xkwadrat+8x+16-2xkwadrat+8= 4xkwadrat-2x-2

b)..=12-4xkwadrat+4xkwadrat+8x+4-6+3x+9-xkwadrat=
2xkwadrat+19+11x

Answer 2

2x(x-5)+3(x²-2)+(x+4)²-2(x-2)(x+2)
2x²-10x+3x²-6+x²+8x+16-2x²+8= 4x²-2x+18

4(3-x²)+4(x-1)²-3x(2-x)+(3-x)(3+x)= 12-4x²+4x²-8x+4-6x+3x²+9-x²=
= 2x²-14x+25