Question

sel 2.1 olve the following: ) 98-32-105+21

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Answer 1

Answer:

-18 is the correct answer

Step-by-step explanation:

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Answer 2

Answer:

Using the identity (x+a)(x+b) = x

Using the identity (x+a)(x+b) = x 2

Using the identity (x+a)(x+b) = x 2 +(a+b)x+ab

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100 2

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100 2 +[2+(−2)]100+(2)(−2)

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100 2 +[2+(−2)]100+(2)(−2)= 10000+(0)100−4

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100 2 +[2+(−2)]100+(2)(−2)= 10000+(0)100−4= 9996

Using the identity (x+a)(x+b) = x 2 +(a+b)x+abWriting 102 as 100+2 and 98 as 100−2Hence (100+2)(100−2) = 100 2 +[2+(−2)]100+(2)(−2)= 10000+(0)100−4= 9996The answer is 9996