e) 12.2² ─ 7.8²
= (12.2 + ) x ( ─ )
=_ X _
= _
f) 96 x 103 =
(100 )(100 + )
= ()² + 100 ( + ) + ( x )
= ─ ─
=
Answers
Answered by
4
Answer:
(12.2+7.8) (12.2-7.8)
(12.2+7.8) (12.2-7.8)20x4.4
(12.2+7.8) (12.2-7.8)20x4.4=8.8
f) 96 x 103 =(100-4 )(100 +3 )
)= (100 )² + 100 (-4 +3 ) + ( -4x 3)
=10000-100-12
= 9888
Answered by
52
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