Question

помогитееееее...(((((

Answer 1

8. Разность произведений биномов и одночленов:

$\sf \large \bigg(5 {a}^{5} - 3b \bigg) \times 2b - 3b \bigg(14 {a}^{5} - 4b \bigg) = \\ \sf \large \: = 10 {a}^{5} b - 6 {b}^{2} - 42 {a}^{5} b + 12 {b}^{2} = \\ \sf \large \: = \boxed{ \underline{ \huge - 32 {a}^{5}b + 6 {b}^{2} }};$

9. Сумма произведений одночленов и биномов:

$\sf \large - 8 {t}^{2} \bigg(2 {t}^{16} - 3k \bigg) + 5 \bigg(4 {t}^{18} - 2k \bigg) = \\ \sf \large \: = - 16 {t}^{18} + 24 {t}^{2} k + 20 {t}^{18} - 10k = \\ \sf \large \: = \boxed{ \underline{ \huge 4 {t}^{18} + 24 {t}^{2} k - 10k}};$

10. Произведение одночлена и тринома:

$\sf \large \: {u}^{9} {v}^{2} \bigg( {u}^{2} - 10 {v}^{2} - 6 {t}^{2} \bigg) = \\ \sf \large \: = \boxed{ \underline{ \huge {u}^{11} {v}^{2} - 10 {u}^{9} {v}^{4} - 6 {u}^{9} {v}^{2} {t}^{2} }}.$