Question

using some algebraic identity 9.7 square the​

Answer 1

Answer:

${(9.7)}^{2} = 94.09$

Step-by-step explanation:

$9.7 = 10 - 0.3$

Using identity

${(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab$

$(10 - 0.3) \\ squaring \: the \: term \\ {(10 - 0.3)}^{2} = {10}^{2} + {(0.3)}^{2} - 2 \times 10 \times (0.3) \\ = 100 + 0.09 - 6 \\ = 94 + 0.09 = 94.09$