Question

(х+3)(3х+1)-(2х-3)(1-х),при х=-0,6​

Answer 1

(х+3)(3х+1)-(2х-3)(1-х)=

3х^2+х+9х+3-2х+2х^2+3-3х=

5х^2+5х+6= 5×(-0.6)^2+5×(-0.6)+6=

5×0.36 - 3 + 6= 18 + 3= 21

Answer 2

To evaluate the expression (х+3)(3х+1)-(2х-3)(1-х) when х=-0.6, we simply substitute -0.6 for x and perform the arithmetic:

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(-0.6 + 3)(3*(-0.6) + 1) - (2*(-0.6) - 3)(1 - (-0.6))
= (2.4)(-1.8 + 1) - (-3.2)(1.6)
= (2.4)(-0.8) + (3.2)(1.6)
= -1.92 + 5.12
= 3.2

Therefore, (х+3)(3х+1)-(2х-3)(1-х) when х=-0,6 is equal to 3.2.