What is the first step in solving the quadratic equation x2 - 40 = 0?
taking the square root of both sides of the equation
adding 40 to both sides of the equation
squaring both sides of the equation
subtracting 40 from both sides of the equation
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dd

the first step is adding 40 to both sides of the equation

Step-by-step explanation:

Solving the quadratic equation means we solve the equation for x

To solve for x we need to isolate x^2

To isolate x^2, remove -40 from the left hand side

In order to remove -40 we do opposite operation

Opposite of -4 is +40

So we add 40 on both sides of the equation

the first step is adding 40 to both sides of the equation

adding 40 on both sides

Step-by-step explanation:

I definitely would not take the square root of both sides as my first step...

Adding 40 on both sides would give me x^2=40

That looks like an amazing first step because there is only one more thing after which is taking square root of both sides.

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.