Question

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

Answer 1

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

Answer 2

`\huge \sf ༆ Answer ༄`

Let's solve ~

`\qquad \sf \dashrightarrow \: {a}^(2) - 4a`

Now, substitute a for 10

`\qquad \sf \dashrightarrow \: ( {10}^(2) ) - (4 * 10)`

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

`\qquad \sf \dashrightarrow \: 60`