Zadanie 1 Wykonaj mnożenie i zredukuj wyrazy podobne.
1) (x²+7)(4+5x²)
2) (5ab+4b)(8b-4a)
3) (4c-d²)(d²+10c)
4) (ef-cd²)(cd³+2ef)
5) (4c+5c)(4d+d)
6) (10d²+a)(k²+k)
7) (4d+f+g)(4+2a)
8) (x+7)(2x-1)
9) (2du+4ml)(4e-5e)
10) (5c²+f)(2e+5b)
11) (bla²+4)(la²+2b)
12) (cd+4)(16b²cd+4)
13) (10cd+d)(5-10d)
14) (5√3-4)(4+2√3)
15) (4c-5√2)(√2-6c)
16) (4x+6y+5)(3y+7)
17) (5e+4)(e+5)
18) (5l+4o+x+2e)(5l+4e)
19) (12c+4e)(5d+c)
20) (4p-p³)(3+p)
21) (10c+c)(5d+d)
22) (2f+5g)(g+4f)
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1) (x²+7)(4+5x²) =4x²+28+5x³+35x²=39x²+5x³+28
2)(5ab+4b)(8b-4a)=40ab²+32b² -20a²b-16ab=
3)(4c-d²)(d²+10c)=4cd²-d⁴+40c²-10cd² =-6cd² -d⁴+40c
4)(ef-cd²)(cd³+2ef)=efcd³ -c²d⁵+2e²f² -2cd²ef
5)(4c+5c)(4d+d)=16cd+20cd+4cd+5cd=45cd
6) (10d²+a)(k²+k)=10d²k² +ak² +10d²k+ak=
7)(4d+f+g)(4+2a)=16d+4f+4g +8ad+2af+2ag
8)(x+7)(2x-1)=2x²+14x-x-7=2x²+13x-7
9)(2du+4ml)(4e-5e)=8due +16eml-10due-20eml= -2due-4eml
10)(5c²+f)(2e+5b)=10c²e+2ef+25bc²+5bf
11)(bla²+4)(la²+2b)=bl²a⁴ +4la²+2b²la²+8b
12)(cd+4)(16b²cd+4)=16b²c²d² +64b²cd +4cd +16
13)(10cd+d)(5-10d)=50cd+5d-100cd²-10d²
14) (5√3-4)(4+2√3)=10√3-16+30-8√3 =2√3+14
15) (4c-5√2)(√2-6c)=4√2c-10 -24c²+30√2c=34√2c -10-24c²
16) (4x+6y+5)(3y+7)=12xy+18y²+15y+28x+42y+35=12xy+18y²+28x+57y+35
17)(5e+4)(e+5)=5e²+4e+25e+20=5e²+29e+20
18)(5l+4o+x+2e)(5l+4e)=5l²+20ol+5xl+10el+20el+16oe+4xe+8e²=5l²+20ol+5xl
+30el+16oe+4xe+8e²
19) (12c+4e)(5d+c)=60cd+20ed+12c²+4ce
20) (4p-p³)(3+p)=12p-3p³+4p²-p⁴
21) (10c+c)(5d+d)=50cd+5cd+10cd+cd=66cd
22) (2f+5g)(g+4f)=2fg+5g² +8f²+20fg=22fg+5g²+8f²