Question

Using Brackets

1) 105 × 107​

Answer 1

Answer:

105 × 107

(100 + 5) (100 + 7)

$ID=> (x + a) (x+b) = x^{2} + (a+b)x + ab$

here our x = 100, a = 5, b = 7

= $(100)^{2} + (5+7) 100 + (5X7)$

= 10000 + 1200 + 35

= 11235

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Answer 2

Step-by-step explanation:

105 × 107

(100 + 5) (100 + 7)

ID= > (x + a) (x+b) = x^{2} + (a+b)x + abID=>(x+a)(x+b)=x

2

+(a+b)x+ab

here our x = 100, a = 5, b = 7

= (100)^{2} + (5+7) 100 + (5X7)(100)

2

+(5+7)100+(5X7)

= 10000 + 1200 + 35

= 11235

HOPE IT HELPS