Math, asked by queen9720, 1 year ago

(A) factorise the following algebraic expression:-

m) (7a - 6b)^2 - 16 c^2

n) (4x + 5y)^2 - 1

o) 16x^2 - (5y + 7)^2

p) x^2 - 17x + 60

q) a^2 + a + 1/4

r) 100 - (a - 4)^2​

plss help me guys its urgent plss solve these all questions

Answers

Answered by sahiltiwari98
8

Step-by-step explanation:

m)(7a-6b)^2-16c^2

(7a-6b)^2-(4c)^2

by a^2-b^2=(a-b) (a+b) identity

(7a-6b+4c) (7a-6b-4c)Answer

n)(4x+5y)^2-1

(4x+5y)^2-(1)^2

by a^2-b^2=(a+b)(a-b) identity

(4x+5y+1)(4x+5y-1)Answer

o) 16x^2-(5y+7)^2

(4x)^2-(5y+7)^2

by a^2-b^2=(a+b)(a-b)identity

(4x+5y+7)(4x-5y-7)Answer

p) x^2-17x+60

x^2-12x-5x+60

(x^2-12x)-(5x-60)

x(x-12)-5(x-12)

(x-5)(x-12)Answer

q) a^2+a+1/4

by (a+b)^2=a^2+2ab+b^2

a^2+2×a×1/2+(1/2)^2

(a+1/2)^2=(a+1/2)(a+1/2)Answer

r) 100-(a-4)^2

(10)^2-(a-4)^2

by a^2-b^2=(a+b)(a-b)

(10+a-4)(10-a+4)Answer

Answered by royaldhruv22
0

Step-by-step explanation:

(A) factorise the following algebraic expression:-

m) (7a - 6b)^2 - 16 c^2

n) (4x + 5y)^2 - 1

o) 16x^2 - (5y + 7)^2

p) x^2 - 17x + 60

q) a^2 + a + 1/4

r) 100 - (a - 4)^2

plss help me guys its urgent plss solve these all questions

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