expand and simplify (x+7)(2x+4)
Using the F.O.I.L rule, standing for first, outside, inside, last, we would multiply out the relevant terms. to give: 2x^2+4x+14x+28. Once we have successfully multiplied out the brackets, we would identify what we call "like terms", theses x^2, x and number terms. After identifying the relevant "like terms", we would be able to simplify the equation to give 2x^2+18x+28.
ED
Related Maths GCSE answers
All answers ▸A bottle contains 300ml of medicine, the dose for a child can be given by (m*a)/150 where m is the child's age in months and a is the adult dosage of 40ml. If you need 2 doses a day, how long will the medicine last until it's empty for a 2y/o child?
Solve the equation (4x-3)/2 + (7x+1)/6 = 29/2.
Given: 𝑓(𝑥) = 𝑎𝑥^3 + 𝑏𝑥^2 − 3 and 𝑓"(−2) = 0. If it is further given that the point (−3; 6) lies on the graph of 𝑓. Show that 𝑎 = 1/3 and 𝑏 = 2.
Finding Roots of Quadratic Equations