Question

Factorise the following using appropriate identities:
(i)49a^2+70ab+25b^2
(iii) t^2-2t+1
(iv)x^2+3x+2
please solve and give me step by step explainations for this 3 sums and (ii) question given in pic also.
send correct answer only,If it is wrong I will report your answer. ​

Answer 1

Answer:

Step-by-step explanation:

(1) (7a)^2 + 2 x 7a x 5b + (5b)^2  {using a^2+2ab+b^2=(a+b)^2}

so factors are (7a+5b) (7a+5b)

(3) similarly (t)^2 -2(t)(1)+(1)^2 {using a^2-2ab+b^2=(a-b)^2}

(t-1) (t-1) are factors

(4) (x)^2+x+2x+2  {using splitting the middle term}

x(x+1) +2(x+1)

so (x+1) (x+2) ar factors

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