jak obliczyć 5a(a-3)-3a(a-5)=? pilne daje naj
5a(a-3)-3a(a-5)=5a^2-15a-3a^2+15a=2a^2; ^ potęga
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5a(a-3)-3a(a-5)=5a^2-15a-3a^2+15a=2a^2; ^ potęga