For questions 21-24, evaluate each expression if a = 2, b= -1, c =3, and d= -5.
21.(a + b + c d) a.-1 b.1 c.2 d.-2
22. (ab-cd) a.13 b.-13 c.17 d.-17
23. ((-a) +b+c+d) a.11 b.-11 C.5 d.-5
24. (5а - За - 8а + 6a) a.0 b.2 c.1 d.3
Pls i really need a specific answer..
21.(a + b + c d) a.-1 b.1 c.2 d.-2
22. (ab-cd) a.13 b.-13 c.17 d.-17
23. ((-a) +b+c+d) a.11 b.-11 C.5 d.-5
24. (5а - За - 8а + 6a) a.0 b.2 c.1 d.3
Pls i really need a specific answer..
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21) (-1+1+2×-2)
=0-4
=-4
22) [(13)(-13) - (17)(-17) ]
= (-169+289)
=120
23) [(11)+(-11)+5+(-5)]
=(11-11+5-5)
=0+0=0
24) (5×0-3×0-8×0-6×0)
= 0