Question

przedstaw wyrażenia w prostrzej postaci :

a) (x+3)²-2(x-5)-4=
b) (a-5)²+4(a-7)+ 2a-10=
c) (x+1)²-(x-2)²-4x-3=
d)2(a-4)²-3(a+5)²-4(a-1)=

Answer 1

a) (x+3)²-2(x-5)-4=x^2 + 9 - 2x +10 - 4 = x^2 - 2x + 15
b) (a-5)²+4(a-7)+ 2a-10= a^2 - 25 + 4a - 28 + 2a - 10 = a^2 +6a - 63
c) (x+1)²-(x-2)²-4x-3= x^2 + 1 - x^2 - 4 - 4x - 3 = 4x - 6
d)2(a-4)²-3(a+5)²-4(a-1)= 2a - 16 - 3a + 25 - 4a + 4 = -5a + 13

Answer 2

a)= x^{2} - 5 - 2x

b)= a^{2} - 63 + 6a

c)= 2 - 4x

d)= -a^{2} + 47 - 4a