Question

(t+3)²-(t-3)² equals
a)2t²+18
b)-12t
c)12t
d)18

with solution​

Answer 1

By identity a²-b²=(a-b)(a+b)

(t+3)²-(t-3)²=(t+3+t-3)(t+3-t+3)

=(2t)(6)

=12t

so option (c) is correct

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Answer 2

Step-by-step explanation:

t² +9 + 6t - ( t² +9 -6t )

t² +9 +6t -t² -9 +6t

= 12t .........

right answer....okkkkkkk

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