Question

solve the quadratic equations
a)x^2-196=0
b)(x+8)^2-5=31
c)7x=64/7x
d)x^2+2x+1=0
e) x^2-3x-10=0​

Answer 1

Step-by-step explanation:

a) x^2-196 = 0

x^2 = 196

x = √196

x = 14

b) (x+8)^2-5 = 31

x^2+64-5 = 31

x^2+59 = 31

x^2 = 31-59

x = √-28

c) 7x = 64/7x

7x×7x = 64

49x = 64

x = 64/49

d) x^2+2x+1 = 0

x^2+2x = -1

e) x^2-3x-10 = 0

x^2-3x = 10