Mathematics
Junior High
กำหนดให้a(x)=2x^2+7x-3 b(x)=x^2+5 จงหา.
1.a(x)+b(x)=
2.a(x)-b(x)=
3.a(x)b(x)=
ช่วยด้วยยยยค่าาา
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