Question

1. Expand.

1.(a+2) (a-1)
2.(m-4) (m+6)
3.(p+8) (p-3)
4.(13+x) (13-x)
5.(3x+4y) (3x+5y)
6.(9x-5t) (9x-3t)


Please help me..​

Answer 1

Answer:

(I) (a+2)(a-1)

=a2-a+2a-2

=a^2+1a-2

(ii)(m-4)(m+6)

=m^2+6m-4m-24

=m^2+2m-24

(iii) (p+8)(p-3)

=p^2-3p+8p-24

=p^2+5p-24

(iv) (13+x)(13-x)

=169-13x+13x-x^2

= -x^2+169

=x^2-169

(v) (3x+4y)(3x+5y)

= 9x^2+15xy+12xy+20y^2

=9x^2+27xy+20y^2

(vi) (9x-5t)(9x-3t)

=81x^2-27xt-45xt+15t^2

= 81x^2-72xt+15t^2

Step-by-step explanation:

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Answer 2

Answer:

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