Odpowiedź:
Szczegółowe wyjaśnienie:
(+5)(+5)= (+5)+5(+5)= 2+10+25
2−−1(−1)=x2−x−1(x−1)=2−−+1=2−2+1
42+14+14+49=42+28+49
(9+8)(9+8)= 812+72+72+642=812+144+642
(1/2a+6)( 1/2a+6)= 1/42+3a+3a+36=1/42+6a+36
2−2+2(−+2)= 2−4+4
(4−1)(4+1)= 162−8+1
(1/4x−3)2=(z/4-3y) (x/4-3y)=(x˄2/4-3xy)/ 4+-3xy/4+9y˄2
2+2−2(−−2)= 2+4+4
(2−3)2= 42−6−6+9= 42−12+9
3˄2−6√2+2=11−6√2
(√3+1) (√3-1)=3-2√3+1=4-2√3
(√5+√2) (√5-√2)=5-2√10+2=7-2√10
(√7+√5) (√7-√5)=49-2√35+5=54-2√35
a (a-1/4)+1/4 (a-1/4)
a⋅a+a⋅−1/4+1/4(a−1/4)
a⋅a−1/4a+1/4a+1/4⋅−1/4
x⋅x+0+1/4⋅−1/4
a2+1/4⋅−1/4
a2−1/16
2a(2a−5)+5(2a−5)
4a2−10a+10a−25
4a2+0−25
4a2−25
2−2+2−42= 2−42
(−3+4)(4+3)= −92−12+12+16= −92+16
