answer with explanation
Answers
Step-by-step explanation:
hi i have solved 6th part
Answer:
A 1 (2p + q)²
(a + b)² = a² + 2ab + b²
= (2p)² + 2(2p)(q) + (q)²
= 4p² + 4pq + q²
2. (102)²
=(100+2)²=(100)²+2(100)(2)+(2)²
=10000+400+4
=10404
B 1. (3m - 4n)²
(a - b)² = a² - 2ab + b²
= (3m)² - 2(3m)(4n) + (4n)²
= 9m² - 24mn + 16n²
2. (97)²
(100-3)² = (100)²-2(100)(3)-(3)²
= 10000-600-9
= 9409
C 1. (104×96)
= ( 100 + 4 ) ( 100 - 4 )
= ( 100 )² - ( 4 )²
= 10000 - 16
= 9984
2. (76)²-(66)²
=(a)² - (b)² =(a+ b)(a-b)
= (76+66)(76-66)
= 1420
D 1. ((3x+2y+z)²
=(3x)²+(2y)²+(−z)²+2×3x×2y+2×2y×−z+2×3x×−z
=9x²+4y²+z²+12xy−4yz−6xz
2. (a-2b-3c)²
=a²+4b²+9c²-4ab+12bc-6ac