2) в
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3 a) (1.5a²b)*(4a³b⁻⁴)=6a²⁺³b¹⁻⁴=6a⁵b⁻³
b) (49x⁵y⁻¹):(0.7x³y⁻²)=70x⁵⁻³y⁻¹⁻²=70x²y⁻³
<span><span>аn <span>=a1 +d(n-1)</span></span>
a1=-101? d=-96-(-101)=5</span>
<span /><span>-96+5(
n-1) ˃0</span>
<span /><span><span>5n<span>˃96+5 n<span>˃ 20,2 n=21</span></span></span>
</span>
Обратите внимание на обозначения:
+ - +
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