The topics you should learn are equating denominators and fractions. This is summing up simple fractions.
So we have to make denominators' numbers the same in order to sum up them all (we can sum fractions if the denominators are the same) , and we did it by cross product (that thing on the picture)
Equating by lcm (least common multiple) is the easiest way, because you might see bigger numbers on other questions, and cross product will bring much bigger numbers, so this technic might confuse you.
By the way lcm of 4 and 5 is already 20
Hope it helps!
5.1 times 4 sides equals the answer would be 20.4<span />
Answer:
y = (x + 1) (x - 1) (x - 3)
Use the distributive property to multiply x+1 by x-1 and combine like terms.
y = (x² - 1) (x - 3)
Use the distributive property to multiply x² - 1 by x - 3.
<u>y = x³ - 3x² - x + 3.</u>
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
Answer:
30,246
Step-by-step explanation:
multiply the two numbers
Answer:
The correct answers are marked.
Step-by-step explanation:
Line k is indicated as perpendicular to RX by the little square at their point of intersection.
Congruence of different line segments will be indicated by marks on them, or by the nature of the geometry containing them (a parallelogram, for instance). There is nothing in this diagram indicating RZ is congruent to GR.
The named points, X, B, V, N, are all shown as being in plane F, so are coplanar.
A plane contains an infinite number of points. In the diagram, there are 5 named points in plane F.
The endpoint of ray RH is point R, which is on line K. However, that is the extent of their intersection. Ray RH heads off in a different direction than line k, so is not part of it.
Segment VN is in plane F; ray RH is not in the plane, but is skew to segment VN. They are not headed in the same direction.
Points R and G are both on line k, so line RG is the same as line k.
