Question

show that
(2-w)(2-w)=7​

Answer 1

FINAL ANSWER:-

w = 1 or w = 3

GIVEN:-

(2-w)(2-w)=7​

TO FIND:-

value of W

FORMULA USED:

a(a+b) + b(a+b)

VALUES:-

a = 2

b = -w

SOLUTION:-

∴ (2-w)(2-w)=7​

  2(2-w) -w(2-w) = 7

  4 -2w -2w + w² = 7

  w² -4w +4 = 7

  w² -4w +4 -7 = 0

  w² -4w - 3 = 0

  w² -3w -w -3 = 0

  (w - 3)(w - 1) = 0

so,

(w - 1)=0

w - 1 = 0

w = 1

or

(w - 3)=0

w - 3 = 0

w = 3

hence,

w = 1               or               w = 3

Answer 2

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