Điền đáp án đúng vào ô trống: <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mstyle" id="MJXp-Span-2"><span class="MJXp-mn" id="MJXp-Span-3">4</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-4">d</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-5">a</span><span class="MJXp-msubsup" id="MJXp-Span-6"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-7" style="margin-right: 0.05em;">m</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-8" style="vertical-align: 0.5em;">2</span></span><span class="MJXp-mo" id="MJXp-Span-9" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mn" id="MJXp-Span-10">5</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-11">h</span><span class="MJXp-msubsup" id="MJXp-Span-12"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-13" style="margin-right: 0.05em;">m</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-14" style="vertical-align: 0.5em;">2</span></span><span class="MJXp-mo" id="MJXp-Span-15" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mo" id="MJXp-Span-16" style="margin-left: 0em; margin-right: 0.222em;">.</span><span class="MJXp-mo" id="MJXp-Span-17" style="margin-left: 0em; margin-right: 0.222em;">.</span><span class="MJXp-mo" id="MJXp-Span-18" style="margin-left: 0em; margin-right: 0.222em;">.</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-19">d</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-20">a</span><span class="MJXp-msubsup" id="MJXp-Span-21"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-22" style="margin-right: 0.05em;">m</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-23" style="vertical-align: 0.5em;">2</span></span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large 4dam^2 + 5hm^2 = ... dam^2</script> Đổ