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Consider the quadratic expression given below.Factor the following expression completely. 3x^2-30x-7...
4 months ago
Q:
Consider the quadratic expression given below.Factor the following expression completely. 3x^2-30x-72
Accepted Solution
A:
[tex]3 x^{2} -30x-72=3( x^{2} -10x-24)[/tex]
Using cross multiplication method,
x -12 -12x
x 2 2x
[tex] x^{2} [/tex] -24 -10x
Therefore,
[tex]3 x^{2} -30x-72=3( x^{2} -10x-24)[/tex]
=3(x-12)(x+2)