Question

Work out the value of a2-4a when a = 10

Answer 1

$\huge \sf ༆ Answer ༄$

Let's solve ~

$\qquad \sf \dashrightarrow \: {a}^{2} - 4a$

Now, substitute a for 10

$\qquad \sf \dashrightarrow \: ( {10}^{2} ) - (4 \times 10)$

$\qquad \sf \dashrightarrow \: 100 - 40$

$\qquad \sf \dashrightarrow \: 60$

Answer 2

Question: Work out the value of a² - 4a when (a = 10)

To find: Value of a² - 4a = ?

Solution:

The hint provided us to solve the question is that the value of a tends to 10 i.e (a = 10) so just we have to replace the value of a = 10 in the given equation.

Substituting value of a = 10 in eqn,

$\mapsto\sf{ {a}^{2} - 4a}$

$\mapsto\sf{( {10}^{2} ) - 4(10)}$

$\mapsto\sf{100 - 4(10)}$

$\mapsto\sf{100 - 40}$

$\mapsto\sf{60}$

• The value of equation is 60