a)p2 + 3p – 4 = 0
b)p2 – 4p – p – 4 = 0
(p + 4) (p - 1) = 0
p = 1, -4
c)x + 2y = 1
or
x + 2y = -4
d)x – 2y = 4
x + 2y = 1
2x = 5 ?x = 2 ½
y = ¾
x – 2y = 4
x + 2y = -4
2x = 0 ? x = 0
y = -2
Kavungya answered the question on October 12, 2019 at 05:51
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