Which are the solutions of the quadratic equation?
x2 = 7x + 4

third option.

Step-by-step explanation:

Move the and to the left side of the equation:

Now you need to apply  the Quadratic formula:

In this case you can identify that:

Then you can substitute values into the Quadratic formula and get the following solutions:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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