Question

1) (x-7) (x+2) =....................................
2) (p+4) (p-3) =.......................................
3) (t-2) (t-4) =............................................
4) (a+b) (a-3) =.......................................
5) (x+2) (x-4) =.............................................
6) (x-3) (x+3) =...............................................
7) (p+4) (p-3) =..........................................
8) (t-3) (t+3) =................................................
9) (2e+3) (2e-3) =............................................
10) (e+5) (e-5) =..........................................

Answer 1

1.(x - 7) (x + 2) = x² + 2x - 7x - 14
                       = x² - 5x - 14
2.(p + 4 ) (p - 3) = p² + 4p - 3p - 12
                        = p² + p - 12
3.(t - 2) (t - 4) = t² - 4t - 2t + 8
                     = t² - 6t + 8
4.(a + b) (a - 3) = a² - 3a + ba - 3b
5.(x + 2) ( x - 4) = x² - 4x + 2x - 8
                         = x² - 2x - 8
6.(x - 3 ) ( x + 3) = x² + 3x - 3x - 9
                         = x² - 9
7.(p + 4) (p - 3) = p² -3p + 4p - 12
                       = p² - p - 12
8.(t - 3) (t + 3) = t² + 3t - 3t - 9
                     = t² - 9
9.(2e + 3) (2e - 3) = 4e² - 6e + 6e - 9
                           = 4e² - 9
10.(e + 5) ( e - 5) =e² - 5e + 5e - 25
                         = e² - 25

Answer 2

nomer 1
= (x - 7) (x + 2)
= x² + 2x - 7x - 14
= x² - 5x - 14

nomer 2
= (p + 4 ) (p - 3)
= p² + 4p - 3p - 12
= p² + p - 12

nomer 3
= (t - 2) (t - 4)
= t² - 4t - 2t + 8
= t² - 6t + 8

nomer 4
= (a + b) (a - 3)
= a² - 3a + ba - 3b
nomer 5
= (x + 2) ( x - 4)
= x² - 4x + 2x - 8
 = x² - 2x - 8
nomer 6
= (x - 3 ) ( x + 3)
= x² + 3x - 3x - 9
= x² - 9
nomer 7
= (p + 4) (p - 3)
= p² -3p + 4p - 12
= p² - p - 12
nomer 8
= (t - 3) (t + 3)
= t² + 3t - 3t - 9
= t² - 9
nomer 9
= (2e + 3) (2e - 3)
= 4e² - 6e + 6e - 9
= 4e² - 9
nomer 10
=(e + 5) ( e - 5)
=e² - 5e + 5e - 25
= e² - 25