There is a stack of 8 cards each given a different number from 1 to 8. Suppose we select a card randomly from the stack, replace
2 answers:
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The solutions of the equation ² - 16 = 0is 4/3 and -4/3 and that of the equation
is 8 and -4.
Solving the both quadratic equations by extracting square roots:
⇒
∴ On taking square-root of both sides, we get
=
⇒
and
⇒ = 4/3 and
= -4/3
For the equation, , the solution is:
⇒
∴ On taking square-root of both sides, we get
⇒ (z - 2) = 6 and (z - 2) = -6
⇒ z = 6 +2 and z = -6 + 2
⇒ z = 8 and z = -4
The solution of the equation is 4/3 and -4/3.
The solution of the equation is 8 and -4.
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