. Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 x 9.8.
Answers
Answered by
2
Answer:
Step-by-step explanation:
9+0.7* 9+.8= 9^2 +(.7+.8)*9 + .7*.8
Hence, 81 +13.5+0.56
=95.06
Answered by
4
Answer:
given
(x + a) (x+b) = x^2 +(a+b)x +ab
to find = 97 x 98
Step-by-step explanation:
97=(100-3)
98= (100-2)
so，
(100-3)(100-2) = (100)^2 + [-3+(-2)]*100 +(-3)*(-2)
=10000 - 500 +6
= 9,504 = ans
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