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1 answer:
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She has distributed the bracket incorrectly
(64 + 5) - 0.2(- 20 + 10)
= (69) - 0.2 (- 10)
=34.5 + 2
= 36.5
Answer:
Step-by-step explanation:
As it is a second order equation, it means that it has two possible answers and they are and
.
The famous quadratic formula for solving any second order equation is the following:
Where a is the coefficient of , b is the coefficient of x, and c is the free term. In other words,
as the equation should be in the following form:
Therefore the possible answer should be the following,
by dividing the numerator and denominator by 2, we can deduce the following,