Contact us
Choose a category below so we can get back to you as quickly as possible.
根據題意可得方程組:a+2b=8−2a+3b=5,解得:a=2,b=3,那麼定義的新運算x*y=ax+by可替換為x*y=2x+3y囙此3*5=2×3+3×5=21.答:所求值為21.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.