Math, asked by lalansingh71, 6 months ago

Factorise the following <br />1) x^2 + 7x + 10<br />2) x^2 – 16x + 39<br />3) x^2 – 9x – 36<br />4) x^2 + 2x – 48​

Answers

Answered by Anonymous
1

Answer:

\huge\underline\bold {Answer:}

1) x^2 + 7x + 10

=  {x}^{2}  + 5x + 2x + 10 \\  = x(x + 5) + 2(x + 5) \\  = (x + 5)(x + 2)

2) x^2 – 16x + 39

 {x}^{2}  - 16x + 39 \\  =  {x}^{2}  - 13x - 3x + 39 \\  =x(x - 13) - 3(x - 13) \\  = (x - 3)(x - 13)

3) x^2 – 9x – 36

 {x}^{2}  - 12x + 3x - 36 \\  = x(x - 12) + 3(x - 13) \\  = (x - 12)( x - 3)

4) x^2 + 2x – 48

 =  {x}^{2}  + 8x - 6x - 48 \\  = x(x + 8) - 6(x + 8)  \\  = (x - 6)(x + 8)

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