Question

(2a-7)(2a-7) solve this question ​

Answer 1

Step-by-step explanation:

(2a-7)(2a-7) = 4a^2 -14a -14a+49

= 4a^2 -28a +49

Answer 2

Answer:

$4a^{2} - 28a + 49$

Step-by-step explanation:

Given:- ( 2a - 7)(2a - 7)

To Find:- Value of the above equation.

Solution:-

Given equation is (2a - 7)(2a - 7) i.e. $(2a - 7)^{2}$

As we know acc. to algebraic formula, $(a - b)^{2} = a^{2} + b^{2} -2ab$

= (2a - 7)(2a - 7)

= $4a^{2} - 14a - 14a +49$

= $4a^{2} - 28a + 49$

So the equation becomes $4a^{2} - 28a + 49$, which is a quadratic equation since it's highest power is 2.

Hence, the result of the equation (2a - 7)(2a - 7) is $4a^{2} - 28a + 49$.

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