а) к*(17-к)+к+30=17к-к²+к+30=-к²+18к+30
б)-6*(4-а)+8а-48=-24+8а-48=8а-72
6 а) х=4.032/(-1.12)=-3.6
б)х=-2; х=6
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а) к*(17-к)+к+30=17к-к²+к+30=-к²+18к+30
б)-6*(4-а)+8а-48=-24+8а-48=8а-72
6 а) х=4.032/(-1.12)=-3.6
б)х=-2; х=6