Q16. Solve (3st + 4t )² – ( 3st - 4t)² using the suitable identity. i will give extra points to whom who will explain it also
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= a2-b2
we will here suppose the first term as a and second as b
(3st+4t+3st-4t) ( 3st+4t-3st+4t)
t*st
st2
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