What is the first step in solving the quadratic equation x2 – 40 = 0?

Given the quadratic equation:

Addition property of equality states that you add the same number to both sides of an equation.

Step 1.

Add 40 to both sides of an equation:

Simplify:

               ......[1]

Step 2.

Take square root both sides in equation [1]; we have

Simplify:

Hence, the roots for the given equation is x = , .

Therefore, for solving the quadratic equation the first step is; Adding 40 to both sides of an equation.

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

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

happy to

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