Question

a2-81 चे अवयव पाडा...​

Answer 1

SOLUTION

TO FACTORISE

$\sf{ {a}^{2} - 81 }$

FORMULA TO BE IMPLEMENTED

We are aware of the formula that

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

EVALUATION

Here the given expression is

$\sf{ {a}^{2} - 81 }$

We factorise it as below

$\sf{ {a}^{2} - 81 }$

$\sf{ = {a}^{2} - {9}^{2} }$

$\sf{ = (a + 9)(a - 9) }$

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Answer 2

Answer:

उपाय

कारखाना करण्यासाठी

a² - 81

फॉर्म्युला अंमलात आणणे

आम्हाला सूत्र माहित आहे की a ^ 2 - b ^ 2 = (a + b) (a - b)

मूल्यमापन

येथे दिलेली अभिव्यक्ती आहे

a² - 81

आम्ही खालीलप्रमाणे त्याचे गुणन करतो

a² - 81

= a² -

9²

= (a +9) (a -9)