(x+a) (x+3)=xsq.+(a+b)x+ab
Answers
Answered by
23
Step-by-step explanation:
105×107
⇒(100+5)(100+7) [is of the form (x+a)(x+b)]
⇒(1002)+(7+5)(100)+7×5 [(x+a)(x+b)=x2+(a+b)x+ab]
⇒10000+1200+35
⇒11235
∴105×107=11235.
Answered by
12
""" ❤️ Answer ❤️ """
105× 107
(x+
a)(x+
b)
⇒ (100+ 5)(100+ 7)
⇒ (100
2
)+ (7+ 5)(100)+ 7× 5
[(x+
a)(x+
b)=
x 2
(a+
b)x+
ab]
⇒ 10000+ 1200+ 35
⇒ 11235
∴ 105× 107= 11235
Similar questions