Question

Expand the following using appropriate identities:
1 ) (p + 4)^2
2) (3m - 5)^2​

Answer 1

Answer:

itna easy question nahi aata?

Step-by-step explanation:

1) (p+4)²

=p²+2×4×p+4²

=p²+8p+16

2)(3m-5)²

=(3m)²-2(3m)×5+(5)²

=9m²-30m+25

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Answer 2

Answer:

1) using (a+b)^2=a^2+2ab+b^2

(p+4)^2=p^2+2×p×4+(4)^2=0

p^2+8p+16=0

p^2+4p+4p+16=0

p(p+4)+4(p+4)=0

(p+4)(p+4)=0

p= -4

2) Similarly,

(3m-5)^2=(3m)^2-2×3m×5+(5)^2=0

9m^2-30m+25=0

9m^2-15m-15m+25=0

3m(3m-5)-5(3m-5)=0

(3m-5)(3m-5) =0

m= 5/3

Step-by-step explanation:

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