The roots are 1 +√7 and 1 -√7.
<h3>What is Quadratic equation?</h3>
A quadratic equation in the variable x is an equation of the form ax² + bx + c= 0, where a, b, c are real numbers, a≠0
Given equation:
y= x²+2x-6
First,
Half the coefficient of x and add and subtract the square of (b/2)
y= x²+2x-6+(1)²-(1)²
y= x²+2x+(1)² -6 -(1)²
y= (x+1)² -7
Now, equate y=0
(x+1)² -7 =0
(x+1)² = 7
x+1= ±√7
x=1 ±√7
Hence, the roots are 1 +√7 and 1 -√7.
Learn more about quadratic equation here:
brainly.com/question/1962219
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Step-by-step explanation:
(a)
the probability of parcels weighing 35oz or less is
0.841
the probability of parcels weighing 14oz or less is
0.023
the probability of parcels weighing between 14 and 35oz is the probabilty of 35oz minus the probability of 14oz
0.841 - 0.023 = 0.818
the percentage is the probability × 100 = 81.8%
(b)
the probability of parcels weighing more than 49oz is 1 minus the probability to weigh less than 49oz.
the probability to weigh less than 49oz is
0.99865
so, the probability to weigh more than 49oz is
1 - 0.99865 = 0.00135
the percentage is again probability×100 = 0.14%
Answer:
Step-by-step explanation:
So in order the trinomial a perfect square we need
When n is equal to this number that we have
sorry i don,t unerstan what u wn,t
Answer:
Step-by-step explanation:
- <em>Binomial = 2 terms in the expression</em>
- <em>Third degree = highest added degree of variables in one term</em>
(A) It has 3 terms and highest degree of 4. It is trinomial of degree 4.
(B) It has 2 terms and highest degree of 3. It is binomial of degree 3.
(C) It has 2 terms and highest degree of 7. It is binomial of degree 7.
(D) It has 2 terms and highest degree of 3. It is binomial of degree 3.
