are these homework problems?

write as x(x - 4)

now replace x with (a + 1) and simplify

the slope of the line passing through the points and are given by:Q2) Find the equation of the line joining: (3,4) and (5,-3)

the equation of a line is of the form

you can find m using the above formula and then use one of the coordinates as the values of x and y. plug them in the equation of the line along with m and solve for b. or, if you prefer, you can use the point slope form: . this gives the equation of the line with slope passing through the point

write as (2t)^2 - 1Q3) Factorise: 4t²-1

this is the difference of two squares. factor accordingly

use the quadratic formula. you do remember it, right?Q4) Solve: 3x²-x-5=0