5/18 а^3b^4 * 3 3/5 а^4b^4=5/18 а^3b^4*18/5 а^4b^4=а^7b^8
При а=-0,2, b=-5
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5/18 а^3b^4 * 3 3/5 а^4b^4=5/18 а^3b^4*18/5 а^4b^4=а^7b^8
При а=-0,2, b=-5
(-0,2) ^7*(-5) ^8=-0,0000128*390625=-5