Answer:
The answer is 21
Step-by-step explanation:
Firat add 5 and 2. Then you multiply the answer of 5+2 and 3.
Answer:
gradient m is 2
Step-by-step explanation:
the equation is y=mx+c therefore m is 2.
To factor quadratic equations of the form ax^2+bx+c=y, you must find two values, j and k, which satisfy two conditions.
jk=ac and j+k=b
The you replace the single linear term bx with jx and kx. Finally then you factor the first pair of terms and the second pair of terms. In this problem...
2k^2-5k-18=0
2k^2+4k-9k-18=0
2k(k+2)-9(k+2)=0
(2k-9)(k+2)=0
so k=-2 and 9/2
k=(-2, 4.5)