Question

kindly find the answers for the above questions​​

Answer 1

Answer:

a = 9/8  b = 131072

Step-by-step explanation:

(a) 2xy-4x²+y/x³

= 20 - 16 + 5 / 8

= 9/8

(b) 2² × 2¹⁵ × 2⁴ × 2⁻⁴

= 2²⁺¹⁵⁺⁴⁺⁽⁻⁴⁾

= 2¹⁷

= 131072

Hope it helps

pls mark as Brainliest

Answer 2

Answer:

$x \times {( - 6)}^{3} = {3}^{5} \\ x \times {(3 \times ( - 2)}^{3} ) = {3}^{5} \\ x \times {3}^{3} \times {( - 2)}^{3} = {3}^{5} \\ x \times {( - 2)}^{3} = \frac{ {3}^{5} }{ {3}^{3} } \\ x \times {( - 2)}^{3} = {(3)}^{5 - 3} \\ x \times {( - 2)}^{3} = {3}^{2} \\ \boxed{ x = \underline{ \underline{ \bf \frac{ {3}^{2} }{ {( - 2)}^{3} } }}} \\ \\ x = 2 \\ y = 5 \\ \\ \frac{2xy - 4 {x}^{2} + y}{ {x}^{3} } \\ = \frac{(2 \times 2 \times 5) - 4 {(2)}^{2} + 5 }{ {2}^{3} } \\ = \frac{20 - (4 \times 4) + 5}{8} \\ = \frac{20 - 16 + 5}{8} \\ \boxed{ = \underline{ \underline{ \bf \frac{9}{8} }}} \\ \\ {2}^{x} \times {2}^{3y} \times { ({2}^{x}) }^{2} \times \times {2}^{ - 4} \\ = {2}^{2} \times {(2)}^{3 \times 5} \times {(2)}^{x \times 2} \times { (\frac{1}{2}) }^{4} \\ = {2}^{2} \times {2}^{15} \times {2}^{2x} \times \frac{ {1}^{4} }{ {2}^{4} } \\ = {2}^{2} \times {2}^{15} \times {(2)}^{2 \times 2} \times \frac{1}{ {2}^{4} } \\ = {2}^{2} \times {2}^{15} \times {2}^{4} \times \frac{1}{ {2}^{4} } \\ = {(2)}^{2 + 15 + 4} \times \frac{1}{ {2}^{4} } \\ = {2}^{21} \times \frac{1}{ {2}^{4} } \\ = {(2)}^{21 - 4} \times 1 \\ = {2}^{17} \times 1 \\ \boxed{ = \underline{ \underline{ \bf {2}^{17} }}}$