Question

СРОЧНО!! Упростите выражение 1.2√40b^5 - 3.4√160b^5 + √250b^5
​

Answer 1

$1.2\sqrt{40} b^{5}-3.4\sqrt{160} b^{5}+\sqrt{250} b^{5}=1.2*2b^{5}\sqrt{10} -3.4*4b^{5}\sqrt{10} +5b^{5}\sqrt{10} =\\\\=2.4b^{5}\sqrt{10}-13.6b^{5}\sqrt{10}+5b^{5}\sqrt{10}=-6.2b^{5}\sqrt{10}$