Question

(12-3)^2 x (6+3)^18-9^20
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(4^2:2^2)^2 x 4^18:256^5​

Answer 1

${(12 - 3)}^{2} \times {(6 + 3)}^{18} - {9}^{20} = {9}^{2} \times {9}^{18} - {9}^{20} = {9}^{2 + 1} - {9}^{20} = {9}^{20} - {9}^{20} = 0$

${( {4}^{2} \div {2}^{2} ) }^{2} \times {4}^{18} \div {256}^{5} = {(16 \div 4)}^{2} \times {4}^{18} \div { ({4}^{4}) }^{5} = {4}^{2} \times {4}^{18} \div {4}^{4 \times 5} = {4}^{2 + 18} \div {4}^{20} = {4}^{20} \div {4}^{20} = 1$

Answer 2

Răspuns:

(12-3)² x (6+3)¹⁸-9²⁰

9²x 9¹⁸-9²⁰= 9²⁰-9²⁰=0

(4²:2²)² x 4¹⁸:256⁵= (16:4)² x 4¹⁸:256⁵=

=4²x 4¹⁸:256⁵=4²⁰:256⁵=4²⁰:(4⁴)⁵=

=4²⁰:4²⁰=1