expand the brackets (x+5)(x+3) furthermore what are the two values of x

X2+3X+5X+15

Take the first X in the first bracket and multiply by every number or letter in the second bracket.

Take the Second number in the first bracket and multiply by every number or letter in the second bracket.

(x+5)(x+3)=0

(x+5)=0

so x=-5

(x+3)=0

so x=-3

SW

Related Maths GCSE answers

All answers ▸

Solve the following simultaneous equations: 3y=7+5x (1) 9x=-7y-4 (2)


(a)Show that the lines y=3x+7 and 2y–6x=8 are parallel. [3 marks] (b) Is the point (–5, –6) above, below or on the line y = 3x + 7 ? Do not use a graphical method. [2 marks] [Total 5 marks]


There are 720 boys in a school and 700 girls. The probability that a girl chosen at random studies french is 3/5 and the probability that a boy chosen at random studies french is 2/3. What is the total number of students in the school that study french?


Show that AB is not parallel to CD.