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| 1. |
X^2+9X^2÷(X+3)=27 findX |
| Answer» x^2+9x^2=27(x+3)10x^2=27x+8110x^2-27x-81=0x=-(-27)+_√(27)^2-4(10)(-81)/20x=27+_√729+3240/20x=27+_√3969/20x=27+_63/20x=90/20=4.5 orx=-46/2=-23 | |