Q40: Solve the problem.<br>-A number is 12 less
Q41: Factor completely.<br>- <span class="ql-formula" data-value="63 x^{2}
Q42: Factor by grouping.<br>- <span class="ql-formula" data-value="x^{3}-3
Q43: Factor completely.<br>- <span class="ql-formula" data-value="20 x^{3}-54
Q44: Factor.<br>- <span class="ql-formula" data-value="y^{2}+0.3 y-0.18"><span class="katex"><span
Q46: Factor completely.<br>- <span class="ql-formula" data-value="4 x^{3}+8
Q47: Factor.<br>- <span class="ql-formula" data-value="18 x^{3}-78 x^{2}-60
Q48: Factor.<br>- <span class="ql-formula" data-value="12 m^{7}-6 m^{4}+14
Q49: Factor completely.<br>- <span class="ql-formula" data-value="6 x^{2}+30
Q50: Factor.<br>- <span class="ql-formula" data-value="3 x^{3}+6 x^{2}-24