Oblicz wartość liczbową wyrażenia:
dla a=-5
proszę o wszystkie obliczenia
a=-5
-3a²-16(a/2-1)+3(a²+2)-2*12,5=
-3a²-8a+16+3a²+6-25=-8a+16+6-25=-8a-3=-8*(-5)-3=40-3=37
licze na naj ;d
-3a²-16*(a/2-1)+3(a²+2)-2*12,5
-3*(-5)²-16*(-5/2-1)+3((-5)²+2)-2*12,5=
=-3*25-16*(-3,5)+3(25+2)-25=
=-75+56+3*27-25=
=-75+56+81-25=
=37
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a=-5
-3a²-16(a/2-1)+3(a²+2)-2*12,5=
-3a²-8a+16+3a²+6-25=-8a+16+6-25=-8a-3=-8*(-5)-3=40-3=37
licze na naj ;d
a=-5
-3a²-16*(a/2-1)+3(a²+2)-2*12,5
-3*(-5)²-16*(-5/2-1)+3((-5)²+2)-2*12,5=
=-3*25-16*(-3,5)+3(25+2)-25=
=-75+56+3*27-25=
=-75+56+81-25=
=37